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openflamingo/lib/python3.10/site-packages/sympy/crypto/tests/test_crypto.py

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+from sympy.core import symbols
+from sympy.crypto.crypto import (cycle_list,
+      encipher_shift, encipher_affine, encipher_substitution,
+      check_and_join, encipher_vigenere, decipher_vigenere,
+      encipher_hill, decipher_hill, encipher_bifid5, encipher_bifid6,
+      bifid5_square, bifid6_square, bifid5, bifid6,
+      decipher_bifid5, decipher_bifid6, encipher_kid_rsa,
+      decipher_kid_rsa, kid_rsa_private_key, kid_rsa_public_key,
+      decipher_rsa, rsa_private_key, rsa_public_key, encipher_rsa,
+      lfsr_connection_polynomial, lfsr_autocorrelation, lfsr_sequence,
+      encode_morse, decode_morse, elgamal_private_key, elgamal_public_key,
+      encipher_elgamal, decipher_elgamal, dh_private_key, dh_public_key,
+      dh_shared_key, decipher_shift, decipher_affine, encipher_bifid,
+      decipher_bifid, bifid_square, padded_key, uniq, decipher_gm,
+      encipher_gm, gm_public_key, gm_private_key, encipher_bg, decipher_bg,
+      bg_private_key, bg_public_key, encipher_rot13, decipher_rot13,
+      encipher_atbash, decipher_atbash, NonInvertibleCipherWarning,
+      encipher_railfence, decipher_railfence)
+from sympy.external.gmpy import gcd
+from sympy.matrices import Matrix
+from sympy.ntheory import isprime, is_primitive_root
+from sympy.polys.domains import FF
+
+from sympy.testing.pytest import raises, warns
+
+from sympy.core.random import randrange
+
+def test_encipher_railfence():
+    assert encipher_railfence("hello world",2) == "hlowrdel ol"
+    assert encipher_railfence("hello world",3) == "horel ollwd"
+    assert encipher_railfence("hello world",4) == "hwe olordll"
+
+def test_decipher_railfence():
+    assert decipher_railfence("hlowrdel ol",2) == "hello world"
+    assert decipher_railfence("horel ollwd",3) == "hello world"
+    assert decipher_railfence("hwe olordll",4) == "hello world"
+
+
+def test_cycle_list():
+    assert cycle_list(3, 4) == [3, 0, 1, 2]
+    assert cycle_list(-1, 4) == [3, 0, 1, 2]
+    assert cycle_list(1, 4) == [1, 2, 3, 0]
+
+
+def test_encipher_shift():
+    assert encipher_shift("ABC", 0) == "ABC"
+    assert encipher_shift("ABC", 1) == "BCD"
+    assert encipher_shift("ABC", -1) == "ZAB"
+    assert decipher_shift("ZAB", -1) == "ABC"
+
+def test_encipher_rot13():
+    assert encipher_rot13("ABC") == "NOP"
+    assert encipher_rot13("NOP") == "ABC"
+    assert decipher_rot13("ABC") == "NOP"
+    assert decipher_rot13("NOP") == "ABC"
+
+
+def test_encipher_affine():
+    assert encipher_affine("ABC", (1, 0)) == "ABC"
+    assert encipher_affine("ABC", (1, 1)) == "BCD"
+    assert encipher_affine("ABC", (-1, 0)) == "AZY"
+    assert encipher_affine("ABC", (-1, 1), symbols="ABCD") == "BAD"
+    assert encipher_affine("123", (-1, 1), symbols="1234") == "214"
+    assert encipher_affine("ABC", (3, 16)) == "QTW"
+    assert decipher_affine("QTW", (3, 16)) == "ABC"
+
+def test_encipher_atbash():
+    assert encipher_atbash("ABC") == "ZYX"
+    assert encipher_atbash("ZYX") == "ABC"
+    assert decipher_atbash("ABC") == "ZYX"
+    assert decipher_atbash("ZYX") == "ABC"
+
+def test_encipher_substitution():
+    assert encipher_substitution("ABC", "BAC", "ABC") == "BAC"
+    assert encipher_substitution("123", "1243", "1234") == "124"
+
+
+def test_check_and_join():
+    assert check_and_join("abc") == "abc"
+    assert check_and_join(uniq("aaabc")) == "abc"
+    assert check_and_join("ab c".split()) == "abc"
+    assert check_and_join("abc", "a", filter=True) == "a"
+    raises(ValueError, lambda: check_and_join('ab', 'a'))
+
+
+def test_encipher_vigenere():
+    assert encipher_vigenere("ABC", "ABC") == "ACE"
+    assert encipher_vigenere("ABC", "ABC", symbols="ABCD") == "ACA"
+    assert encipher_vigenere("ABC", "AB", symbols="ABCD") == "ACC"
+    assert encipher_vigenere("AB", "ABC", symbols="ABCD") == "AC"
+    assert encipher_vigenere("A", "ABC", symbols="ABCD") == "A"
+
+
+def test_decipher_vigenere():
+    assert decipher_vigenere("ABC", "ABC") == "AAA"
+    assert decipher_vigenere("ABC", "ABC", symbols="ABCD") == "AAA"
+    assert decipher_vigenere("ABC", "AB", symbols="ABCD") == "AAC"
+    assert decipher_vigenere("AB", "ABC", symbols="ABCD") == "AA"
+    assert decipher_vigenere("A", "ABC", symbols="ABCD") == "A"
+
+
+def test_encipher_hill():
+    A = Matrix(2, 2, [1, 2, 3, 5])
+    assert encipher_hill("ABCD", A) == "CFIV"
+    A = Matrix(2, 2, [1, 0, 0, 1])
+    assert encipher_hill("ABCD", A) == "ABCD"
+    assert encipher_hill("ABCD", A, symbols="ABCD") == "ABCD"
+    A = Matrix(2, 2, [1, 2, 3, 5])
+    assert encipher_hill("ABCD", A, symbols="ABCD") == "CBAB"
+    assert encipher_hill("AB", A, symbols="ABCD") == "CB"
+    # message length, n, does not need to be a multiple of k;
+    # it is padded
+    assert encipher_hill("ABA", A) == "CFGC"
+    assert encipher_hill("ABA", A, pad="Z") == "CFYV"
+
+
+def test_decipher_hill():
+    A = Matrix(2, 2, [1, 2, 3, 5])
+    assert decipher_hill("CFIV", A) == "ABCD"
+    A = Matrix(2, 2, [1, 0, 0, 1])
+    assert decipher_hill("ABCD", A) == "ABCD"
+    assert decipher_hill("ABCD", A, symbols="ABCD") == "ABCD"
+    A = Matrix(2, 2, [1, 2, 3, 5])
+    assert decipher_hill("CBAB", A, symbols="ABCD") == "ABCD"
+    assert decipher_hill("CB", A, symbols="ABCD") == "AB"
+    # n does not need to be a multiple of k
+    assert decipher_hill("CFA", A) == "ABAA"
+
+
+def test_encipher_bifid5():
+    assert encipher_bifid5("AB", "AB") == "AB"
+    assert encipher_bifid5("AB", "CD") == "CO"
+    assert encipher_bifid5("ab", "c") == "CH"
+    assert encipher_bifid5("a bc", "b") == "BAC"
+
+
+def test_bifid5_square():
+    A = bifid5
+    f = lambda i, j: symbols(A[5*i + j])
+    M = Matrix(5, 5, f)
+    assert bifid5_square("") == M
+
+
+def test_decipher_bifid5():
+    assert decipher_bifid5("AB", "AB") == "AB"
+    assert decipher_bifid5("CO", "CD") == "AB"
+    assert decipher_bifid5("ch", "c") == "AB"
+    assert decipher_bifid5("b ac", "b") == "ABC"
+
+
+def test_encipher_bifid6():
+    assert encipher_bifid6("AB", "AB") == "AB"
+    assert encipher_bifid6("AB", "CD") == "CP"
+    assert encipher_bifid6("ab", "c") == "CI"
+    assert encipher_bifid6("a bc", "b") == "BAC"
+
+
+def test_decipher_bifid6():
+    assert decipher_bifid6("AB", "AB") == "AB"
+    assert decipher_bifid6("CP", "CD") == "AB"
+    assert decipher_bifid6("ci", "c") == "AB"
+    assert decipher_bifid6("b ac", "b") == "ABC"
+
+
+def test_bifid6_square():
+    A = bifid6
+    f = lambda i, j: symbols(A[6*i + j])
+    M = Matrix(6, 6, f)
+    assert bifid6_square("") == M
+
+
+def test_rsa_public_key():
+    assert rsa_public_key(2, 3, 1) == (6, 1)
+    assert rsa_public_key(5, 3, 3) == (15, 3)
+
+    with warns(NonInvertibleCipherWarning):
+        assert rsa_public_key(2, 2, 1) == (4, 1)
+        assert rsa_public_key(8, 8, 8) is False
+
+
+def test_rsa_private_key():
+    assert rsa_private_key(2, 3, 1) == (6, 1)
+    assert rsa_private_key(5, 3, 3) == (15, 3)
+    assert rsa_private_key(23,29,5) == (667,493)
+
+    with warns(NonInvertibleCipherWarning):
+        assert rsa_private_key(2, 2, 1) == (4, 1)
+        assert rsa_private_key(8, 8, 8) is False
+
+
+def test_rsa_large_key():
+    # Sample from
+    # http://www.herongyang.com/Cryptography/JCE-Public-Key-RSA-Private-Public-Key-Pair-Sample.html
+    p = int('101565610013301240713207239558950144682174355406589305284428666'\
+        '903702505233009')
+    q = int('894687191887545488935455605955948413812376003053143521429242133'\
+        '12069293984003')
+    e = int('65537')
+    d = int('893650581832704239530398858744759129594796235440844479456143566'\
+        '6999402846577625762582824202269399672579058991442587406384754958587'\
+        '400493169361356902030209')
+    assert rsa_public_key(p, q, e) == (p*q, e)
+    assert rsa_private_key(p, q, e) == (p*q, d)
+
+
+def test_encipher_rsa():
+    puk = rsa_public_key(2, 3, 1)
+    assert encipher_rsa(2, puk) == 2
+    puk = rsa_public_key(5, 3, 3)
+    assert encipher_rsa(2, puk) == 8
+
+    with warns(NonInvertibleCipherWarning):
+        puk = rsa_public_key(2, 2, 1)
+        assert encipher_rsa(2, puk) == 2
+
+
+def test_decipher_rsa():
+    prk = rsa_private_key(2, 3, 1)
+    assert decipher_rsa(2, prk) == 2
+    prk = rsa_private_key(5, 3, 3)
+    assert decipher_rsa(8, prk) == 2
+
+    with warns(NonInvertibleCipherWarning):
+        prk = rsa_private_key(2, 2, 1)
+        assert decipher_rsa(2, prk) == 2
+
+
+def test_mutltiprime_rsa_full_example():
+    # Test example from
+    # https://iopscience.iop.org/article/10.1088/1742-6596/995/1/012030
+    puk = rsa_public_key(2, 3, 5, 7, 11, 13, 7)
+    prk = rsa_private_key(2, 3, 5, 7, 11, 13, 7)
+    assert puk == (30030, 7)
+    assert prk == (30030, 823)
+
+    msg = 10
+    encrypted = encipher_rsa(2 * msg - 15, puk)
+    assert encrypted == 18065
+    decrypted = (decipher_rsa(encrypted, prk) + 15) / 2
+    assert decrypted == msg
+
+    # Test example from
+    # https://www.scirp.org/pdf/JCC_2018032215502008.pdf
+    puk1 = rsa_public_key(53, 41, 43, 47, 41)
+    prk1 = rsa_private_key(53, 41, 43, 47, 41)
+    puk2 = rsa_public_key(53, 41, 43, 47, 97)
+    prk2 = rsa_private_key(53, 41, 43, 47, 97)
+
+    assert puk1 == (4391633, 41)
+    assert prk1 == (4391633, 294041)
+    assert puk2 == (4391633, 97)
+    assert prk2 == (4391633, 455713)
+
+    msg = 12321
+    encrypted = encipher_rsa(encipher_rsa(msg, puk1), puk2)
+    assert encrypted == 1081588
+    decrypted = decipher_rsa(decipher_rsa(encrypted, prk2), prk1)
+    assert decrypted == msg
+
+
+def test_rsa_crt_extreme():
+    p = int(
+        '10177157607154245068023861503693082120906487143725062283406501' \
+        '54082258226204046999838297167140821364638180697194879500245557' \
+        '65445186962893346463841419427008800341257468600224049986260471' \
+        '92257248163014468841725476918639415726709736077813632961290911' \
+        '0256421232977833028677441206049309220354796014376698325101693')
+
+    q = int(
+        '28752342353095132872290181526607275886182793241660805077850801' \
+        '75689512797754286972952273553128181861830576836289738668745250' \
+        '34028199691128870676414118458442900035778874482624765513861643' \
+        '27966696316822188398336199002306588703902894100476186823849595' \
+        '103239410527279605442148285816149368667083114802852804976893')
+
+    r = int(
+        '17698229259868825776879500736350186838850961935956310134378261' \
+        '89771862186717463067541369694816245225291921138038800171125596' \
+        '07315449521981157084370187887650624061033066022458512942411841' \
+        '18747893789972315277160085086164119879536041875335384844820566' \
+        '0287479617671726408053319619892052000850883994343378882717849')
+
+    s = int(
+        '68925428438585431029269182233502611027091755064643742383515623' \
+        '64321310582896893395529367074942808353187138794422745718419645' \
+        '28291231865157212604266903677599180789896916456120289112752835' \
+        '98502265889669730331688206825220074713977607415178738015831030' \
+        '364290585369150502819743827343552098197095520550865360159439'
+    )
+
+    t = int(
+        '69035483433453632820551311892368908779778144568711455301541094' \
+        '31487047642322695357696860925747923189635033183069823820910521' \
+        '71172909106797748883261493224162414050106920442445896819806600' \
+        '15448444826108008217972129130625571421904893252804729877353352' \
+        '739420480574842850202181462656251626522910618936534699566291'
+    )
+
+    e = 65537
+    puk = rsa_public_key(p, q, r, s, t, e)
+    prk = rsa_private_key(p, q, r, s, t, e)
+
+    plaintext = 1000
+    ciphertext_1 = encipher_rsa(plaintext, puk)
+    ciphertext_2 = encipher_rsa(plaintext, puk, [p, q, r, s, t])
+    assert ciphertext_1 == ciphertext_2
+    assert decipher_rsa(ciphertext_1, prk) == \
+        decipher_rsa(ciphertext_1, prk, [p, q, r, s, t])
+
+
+def test_rsa_exhaustive():
+    p, q = 61, 53
+    e = 17
+    puk = rsa_public_key(p, q, e, totient='Carmichael')
+    prk = rsa_private_key(p, q, e, totient='Carmichael')
+
+    for msg in range(puk[0]):
+        encrypted = encipher_rsa(msg, puk)
+        decrypted = decipher_rsa(encrypted, prk)
+        try:
+            assert decrypted == msg
+        except AssertionError:
+            raise AssertionError(
+                "The RSA is not correctly decrypted " \
+                "(Original : {}, Encrypted : {}, Decrypted : {})" \
+                .format(msg, encrypted, decrypted)
+                )
+
+
+def test_rsa_multiprime_exhanstive():
+    primes = [3, 5, 7, 11]
+    e = 7
+    args = primes + [e]
+    puk = rsa_public_key(*args, totient='Carmichael')
+    prk = rsa_private_key(*args, totient='Carmichael')
+    n = puk[0]
+
+    for msg in range(n):
+        encrypted = encipher_rsa(msg, puk)
+        decrypted = decipher_rsa(encrypted, prk)
+        try:
+            assert decrypted == msg
+        except AssertionError:
+            raise AssertionError(
+                "The RSA is not correctly decrypted " \
+                "(Original : {}, Encrypted : {}, Decrypted : {})" \
+                .format(msg, encrypted, decrypted)
+                )
+
+
+def test_rsa_multipower_exhanstive():
+    primes = [5, 5, 7]
+    e = 7
+    args = primes + [e]
+    puk = rsa_public_key(*args, multipower=True)
+    prk = rsa_private_key(*args, multipower=True)
+    n = puk[0]
+
+    for msg in range(n):
+        if gcd(msg, n) != 1:
+            continue
+
+        encrypted = encipher_rsa(msg, puk)
+        decrypted = decipher_rsa(encrypted, prk)
+        try:
+            assert decrypted == msg
+        except AssertionError:
+            raise AssertionError(
+                "The RSA is not correctly decrypted " \
+                "(Original : {}, Encrypted : {}, Decrypted : {})" \
+                .format(msg, encrypted, decrypted)
+                )
+
+
+def test_kid_rsa_public_key():
+    assert kid_rsa_public_key(1, 2, 1, 1) == (5, 2)
+    assert kid_rsa_public_key(1, 2, 2, 1) == (8, 3)
+    assert kid_rsa_public_key(1, 2, 1, 2) == (7, 2)
+
+
+def test_kid_rsa_private_key():
+    assert kid_rsa_private_key(1, 2, 1, 1) == (5, 3)
+    assert kid_rsa_private_key(1, 2, 2, 1) == (8, 3)
+    assert kid_rsa_private_key(1, 2, 1, 2) == (7, 4)
+
+
+def test_encipher_kid_rsa():
+    assert encipher_kid_rsa(1, (5, 2)) == 2
+    assert encipher_kid_rsa(1, (8, 3)) == 3
+    assert encipher_kid_rsa(1, (7, 2)) == 2
+
+
+def test_decipher_kid_rsa():
+    assert decipher_kid_rsa(2, (5, 3)) == 1
+    assert decipher_kid_rsa(3, (8, 3)) == 1
+    assert decipher_kid_rsa(2, (7, 4)) == 1
+
+
+def test_encode_morse():
+    assert encode_morse('ABC') == '.-|-...|-.-.'
+    assert encode_morse('SMS ') == '...|--|...||'
+    assert encode_morse('SMS\n') == '...|--|...||'
+    assert encode_morse('') == ''
+    assert encode_morse(' ') == '||'
+    assert encode_morse(' ', sep='`') == '``'
+    assert encode_morse(' ', sep='``') == '````'
+    assert encode_morse('!@#$%^&*()_+') == '-.-.--|.--.-.|...-..-|-.--.|-.--.-|..--.-|.-.-.'
+    assert encode_morse('12345') == '.----|..---|...--|....-|.....'
+    assert encode_morse('67890') == '-....|--...|---..|----.|-----'
+
+
+def test_decode_morse():
+    assert decode_morse('-.-|.|-.--') == 'KEY'
+    assert decode_morse('.-.|..-|-.||') == 'RUN'
+    raises(KeyError, lambda: decode_morse('.....----'))
+
+
+def test_lfsr_sequence():
+    raises(TypeError, lambda: lfsr_sequence(1, [1], 1))
+    raises(TypeError, lambda: lfsr_sequence([1], 1, 1))
+    F = FF(2)
+    assert lfsr_sequence([F(1)], [F(1)], 2) == [F(1), F(1)]
+    assert lfsr_sequence([F(0)], [F(1)], 2) == [F(1), F(0)]
+    F = FF(3)
+    assert lfsr_sequence([F(1)], [F(1)], 2) == [F(1), F(1)]
+    assert lfsr_sequence([F(0)], [F(2)], 2) == [F(2), F(0)]
+    assert lfsr_sequence([F(1)], [F(2)], 2) == [F(2), F(2)]
+
+
+def test_lfsr_autocorrelation():
+    raises(TypeError, lambda: lfsr_autocorrelation(1, 2, 3))
+    F = FF(2)
+    s = lfsr_sequence([F(1), F(0)], [F(0), F(1)], 5)
+    assert lfsr_autocorrelation(s, 2, 0) == 1
+    assert lfsr_autocorrelation(s, 2, 1) == -1
+
+
+def test_lfsr_connection_polynomial():
+    F = FF(2)
+    x = symbols("x")
+    s = lfsr_sequence([F(1), F(0)], [F(0), F(1)], 5)
+    assert lfsr_connection_polynomial(s) == x**2 + 1
+    s = lfsr_sequence([F(1), F(1)], [F(0), F(1)], 5)
+    assert lfsr_connection_polynomial(s) == x**2 + x + 1
+
+
+def test_elgamal_private_key():
+    a, b, _ = elgamal_private_key(digit=100)
+    assert isprime(a)
+    assert is_primitive_root(b, a)
+    assert len(bin(a)) >= 102
+
+
+def test_elgamal():
+    dk = elgamal_private_key(5)
+    ek = elgamal_public_key(dk)
+    P = ek[0]
+    assert P - 1 == decipher_elgamal(encipher_elgamal(P - 1, ek), dk)
+    raises(ValueError, lambda: encipher_elgamal(P, dk))
+    raises(ValueError, lambda: encipher_elgamal(-1, dk))
+
+
+def test_dh_private_key():
+    p, g, _ = dh_private_key(digit = 100)
+    assert isprime(p)
+    assert is_primitive_root(g, p)
+    assert len(bin(p)) >= 102
+
+
+def test_dh_public_key():
+    p1, g1, a = dh_private_key(digit = 100)
+    p2, g2, ga = dh_public_key((p1, g1, a))
+    assert p1 == p2
+    assert g1 == g2
+    assert ga == pow(g1, a, p1)
+
+
+def test_dh_shared_key():
+    prk = dh_private_key(digit = 100)
+    p, _, ga = dh_public_key(prk)
+    b = randrange(2, p)
+    sk = dh_shared_key((p, _, ga), b)
+    assert sk == pow(ga, b, p)
+    raises(ValueError, lambda: dh_shared_key((1031, 14, 565), 2000))
+
+
+def test_padded_key():
+    assert padded_key('b', 'ab') == 'ba'
+    raises(ValueError, lambda: padded_key('ab', 'ace'))
+    raises(ValueError, lambda: padded_key('ab', 'abba'))
+
+
+def test_bifid():
+    raises(ValueError, lambda: encipher_bifid('abc', 'b', 'abcde'))
+    assert encipher_bifid('abc', 'b', 'abcd') == 'bdb'
+    raises(ValueError, lambda: decipher_bifid('bdb', 'b', 'abcde'))
+    assert encipher_bifid('bdb', 'b', 'abcd') == 'abc'
+    raises(ValueError, lambda: bifid_square('abcde'))
+    assert bifid5_square("B") == \
+        bifid5_square('BACDEFGHIKLMNOPQRSTUVWXYZ')
+    assert bifid6_square('B0') == \
+        bifid6_square('B0ACDEFGHIJKLMNOPQRSTUVWXYZ123456789')
+
+
+def test_encipher_decipher_gm():
+    ps = [131, 137, 139, 149, 151, 157, 163, 167,
+          173, 179, 181, 191, 193, 197, 199]
+    qs = [89, 97, 101, 103, 107, 109, 113, 127,
+          131, 137, 139, 149, 151, 157, 47]
+    messages = [
+        0, 32855, 34303, 14805, 1280, 75859, 38368,
+        724, 60356, 51675, 76697, 61854, 18661,
+    ]
+    for p, q in zip(ps, qs):
+        pri = gm_private_key(p, q)
+        for msg in messages:
+            pub = gm_public_key(p, q)
+            enc = encipher_gm(msg, pub)
+            dec = decipher_gm(enc, pri)
+            assert dec == msg
+
+
+def test_gm_private_key():
+    raises(ValueError, lambda: gm_public_key(13, 15))
+    raises(ValueError, lambda: gm_public_key(0, 0))
+    raises(ValueError, lambda: gm_public_key(0, 5))
+    assert 17, 19 == gm_public_key(17, 19)
+
+
+def test_gm_public_key():
+    assert 323 == gm_public_key(17, 19)[1]
+    assert 15  == gm_public_key(3, 5)[1]
+    raises(ValueError, lambda: gm_public_key(15, 19))
+
+def test_encipher_decipher_bg():
+    ps = [67, 7, 71, 103, 11, 43, 107, 47,
+          79, 19, 83, 23, 59, 127, 31]
+    qs = qs = [7, 71, 103, 11, 43, 107, 47,
+               79, 19, 83, 23, 59, 127, 31, 67]
+    messages = [
+        0, 328, 343, 148, 1280, 758, 383,
+        724, 603, 516, 766, 618, 186,
+    ]
+
+    for p, q in zip(ps, qs):
+        pri = bg_private_key(p, q)
+        for msg in messages:
+            pub = bg_public_key(p, q)
+            enc = encipher_bg(msg, pub)
+            dec = decipher_bg(enc, pri)
+            assert dec == msg
+
+def test_bg_private_key():
+    raises(ValueError, lambda: bg_private_key(8, 16))
+    raises(ValueError, lambda: bg_private_key(8, 8))
+    raises(ValueError, lambda: bg_private_key(13, 17))
+    assert 23, 31 == bg_private_key(23, 31)
+
+def test_bg_public_key():
+    assert 5293 == bg_public_key(67, 79)
+    assert 713 == bg_public_key(23, 31)
+    raises(ValueError, lambda: bg_private_key(13, 17))

openflamingo/lib/python3.10/site-packages/sympy/series/benchmarks/bench_order.py

@@ -0,0 +1,10 @@
+from sympy.core.add import Add
+from sympy.core.symbol import Symbol
+from sympy.series.order import O
+
+x = Symbol('x')
+l = [x**i for i in range(1000)]
+l.append(O(x**1001))
+
+def timeit_order_1x():
+    Add(*l)

openflamingo/lib/python3.10/site-packages/sympy/sets/handlers/intersection.py

@@ -0,0 +1,533 @@
+from sympy.core.basic import _aresame
+from sympy.core.function import Lambda, expand_complex
+from sympy.core.mul import Mul
+from sympy.core.numbers import ilcm, Float
+from sympy.core.relational import Eq
+from sympy.core.singleton import S
+from sympy.core.symbol import (Dummy, symbols)
+from sympy.core.sorting import ordered
+from sympy.functions.elementary.complexes import sign
+from sympy.functions.elementary.integers import floor, ceiling
+from sympy.sets.fancysets import ComplexRegion
+from sympy.sets.sets import (FiniteSet, Intersection, Interval, Set, Union)
+from sympy.multipledispatch import Dispatcher
+from sympy.sets.conditionset import ConditionSet
+from sympy.sets.fancysets import (Integers, Naturals, Reals, Range,
+    ImageSet, Rationals)
+from sympy.sets.sets import EmptySet, UniversalSet, imageset, ProductSet
+from sympy.simplify.radsimp import numer
+
+
+intersection_sets = Dispatcher('intersection_sets')
+
+
+@intersection_sets.register(ConditionSet, ConditionSet)
+def _(a, b):
+    return None
+
+@intersection_sets.register(ConditionSet, Set)
+def _(a, b):
+    return ConditionSet(a.sym, a.condition, Intersection(a.base_set, b))
+
+@intersection_sets.register(Naturals, Integers)
+def _(a, b):
+    return a
+
+@intersection_sets.register(Naturals, Naturals)
+def _(a, b):
+    return a if a is S.Naturals else b
+
+@intersection_sets.register(Interval, Naturals)
+def _(a, b):
+    return intersection_sets(b, a)
+
+@intersection_sets.register(ComplexRegion, Set)
+def _(self, other):
+    if other.is_ComplexRegion:
+        # self in rectangular form
+        if (not self.polar) and (not other.polar):
+            return ComplexRegion(Intersection(self.sets, other.sets))
+
+        # self in polar form
+        elif self.polar and other.polar:
+            r1, theta1 = self.a_interval, self.b_interval
+            r2, theta2 = other.a_interval, other.b_interval
+            new_r_interval = Intersection(r1, r2)
+            new_theta_interval = Intersection(theta1, theta2)
+
+            # 0 and 2*Pi means the same
+            if ((2*S.Pi in theta1 and S.Zero in theta2) or
+               (2*S.Pi in theta2 and S.Zero in theta1)):
+                new_theta_interval = Union(new_theta_interval,
+                                           FiniteSet(0))
+            return ComplexRegion(new_r_interval*new_theta_interval,
+                                polar=True)
+
+
+    if other.is_subset(S.Reals):
+        new_interval = []
+        x = symbols("x", cls=Dummy, real=True)
+
+        # self in rectangular form
+        if not self.polar:
+            for element in self.psets:
+                if S.Zero in element.args[1]:
+                    new_interval.append(element.args[0])
+            new_interval = Union(*new_interval)
+            return Intersection(new_interval, other)
+
+        # self in polar form
+        elif self.polar:
+            for element in self.psets:
+                if S.Zero in element.args[1]:
+                    new_interval.append(element.args[0])
+                if S.Pi in element.args[1]:
+                    new_interval.append(ImageSet(Lambda(x, -x), element.args[0]))
+                if S.Zero in element.args[0]:
+                    new_interval.append(FiniteSet(0))
+            new_interval = Union(*new_interval)
+            return Intersection(new_interval, other)
+
+@intersection_sets.register(Integers, Reals)
+def _(a, b):
+    return a
+
+@intersection_sets.register(Range, Interval)
+def _(a, b):
+    # Check that there are no symbolic arguments
+    if not all(i.is_number for i in a.args + b.args[:2]):
+        return
+
+    # In case of null Range, return an EmptySet.
+    if a.size == 0:
+        return S.EmptySet
+
+    # trim down to self's size, and represent
+    # as a Range with step 1.
+    start = ceiling(max(b.inf, a.inf))
+    if start not in b:
+        start += 1
+    end = floor(min(b.sup, a.sup))
+    if end not in b:
+        end -= 1
+    return intersection_sets(a, Range(start, end + 1))
+
+@intersection_sets.register(Range, Naturals)
+def _(a, b):
+    return intersection_sets(a, Interval(b.inf, S.Infinity))
+
+@intersection_sets.register(Range, Range)
+def _(a, b):
+    # Check that there are no symbolic range arguments
+    if not all(all(v.is_number for v in r.args) for r in [a, b]):
+        return None
+
+    # non-overlap quick exits
+    if not b:
+        return S.EmptySet
+    if not a:
+        return S.EmptySet
+    if b.sup < a.inf:
+        return S.EmptySet
+    if b.inf > a.sup:
+        return S.EmptySet
+
+    # work with finite end at the start
+    r1 = a
+    if r1.start.is_infinite:
+        r1 = r1.reversed
+    r2 = b
+    if r2.start.is_infinite:
+        r2 = r2.reversed
+
+    # If both ends are infinite then it means that one Range is just the set
+    # of all integers (the step must be 1).
+    if r1.start.is_infinite:
+        return b
+    if r2.start.is_infinite:
+        return a
+
+    from sympy.solvers.diophantine.diophantine import diop_linear
+
+    # this equation represents the values of the Range;
+    # it's a linear equation
+    eq = lambda r, i: r.start + i*r.step
+
+    # we want to know when the two equations might
+    # have integer solutions so we use the diophantine
+    # solver
+    va, vb = diop_linear(eq(r1, Dummy('a')) - eq(r2, Dummy('b')))
+
+    # check for no solution
+    no_solution = va is None and vb is None
+    if no_solution:
+        return S.EmptySet
+
+    # there is a solution
+    # -------------------
+
+    # find the coincident point, c
+    a0 = va.as_coeff_Add()[0]
+    c = eq(r1, a0)
+
+    # find the first point, if possible, in each range
+    # since c may not be that point
+    def _first_finite_point(r1, c):
+        if c == r1.start:
+            return c
+        # st is the signed step we need to take to
+        # get from c to r1.start
+        st = sign(r1.start - c)*step
+        # use Range to calculate the first point:
+        # we want to get as close as possible to
+        # r1.start; the Range will not be null since
+        # it will at least contain c
+        s1 = Range(c, r1.start + st, st)[-1]
+        if s1 == r1.start:
+            pass
+        else:
+            # if we didn't hit r1.start then, if the
+            # sign of st didn't match the sign of r1.step
+            # we are off by one and s1 is not in r1
+            if sign(r1.step) != sign(st):
+                s1 -= st
+        if s1 not in r1:
+            return
+        return s1
+
+    # calculate the step size of the new Range
+    step = abs(ilcm(r1.step, r2.step))
+    s1 = _first_finite_point(r1, c)
+    if s1 is None:
+        return S.EmptySet
+    s2 = _first_finite_point(r2, c)
+    if s2 is None:
+        return S.EmptySet
+
+    # replace the corresponding start or stop in
+    # the original Ranges with these points; the
+    # result must have at least one point since
+    # we know that s1 and s2 are in the Ranges
+    def _updated_range(r, first):
+        st = sign(r.step)*step
+        if r.start.is_finite:
+            rv = Range(first, r.stop, st)
+        else:
+            rv = Range(r.start, first + st, st)
+        return rv
+    r1 = _updated_range(a, s1)
+    r2 = _updated_range(b, s2)
+
+    # work with them both in the increasing direction
+    if sign(r1.step) < 0:
+        r1 = r1.reversed
+    if sign(r2.step) < 0:
+        r2 = r2.reversed
+
+    # return clipped Range with positive step; it
+    # can't be empty at this point
+    start = max(r1.start, r2.start)
+    stop = min(r1.stop, r2.stop)
+    return Range(start, stop, step)
+
+
+@intersection_sets.register(Range, Integers)
+def _(a, b):
+    return a
+
+
+@intersection_sets.register(Range, Rationals)
+def _(a, b):
+    return a
+
+
+@intersection_sets.register(ImageSet, Set)
+def _(self, other):
+    from sympy.solvers.diophantine import diophantine
+
+    # Only handle the straight-forward univariate case
+    if (len(self.lamda.variables) > 1
+            or self.lamda.signature != self.lamda.variables):
+        return None
+    base_set = self.base_sets[0]
+
+    # Intersection between ImageSets with Integers as base set
+    # For {f(n) : n in Integers} & {g(m) : m in Integers} we solve the
+    # diophantine equations f(n)=g(m).
+    # If the solutions for n are {h(t) : t in Integers} then we return
+    # {f(h(t)) : t in integers}.
+    # If the solutions for n are {n_1, n_2, ..., n_k} then we return
+    # {f(n_i) : 1 <= i <= k}.
+    if base_set is S.Integers:
+        gm = None
+        if isinstance(other, ImageSet) and other.base_sets == (S.Integers,):
+            gm = other.lamda.expr
+            var = other.lamda.variables[0]
+            # Symbol of second ImageSet lambda must be distinct from first
+            m = Dummy('m')
+            gm = gm.subs(var, m)
+        elif other is S.Integers:
+            m = gm = Dummy('m')
+        if gm is not None:
+            fn = self.lamda.expr
+            n = self.lamda.variables[0]
+            try:
+                solns = list(diophantine(fn - gm, syms=(n, m), permute=True))
+            except (TypeError, NotImplementedError):
+                # TypeError if equation not polynomial with rational coeff.
+                # NotImplementedError if correct format but no solver.
+                return
+            # 3 cases are possible for solns:
+            # - empty set,
+            # - one or more parametric (infinite) solutions,
+            # - a finite number of (non-parametric) solution couples.
+            # Among those, there is one type of solution set that is
+            # not helpful here: multiple parametric solutions.
+            if len(solns) == 0:
+                return S.EmptySet
+            elif any(s.free_symbols for tupl in solns for s in tupl):
+                if len(solns) == 1:
+                    soln, solm = solns[0]
+                    (t,) = soln.free_symbols
+                    expr = fn.subs(n, soln.subs(t, n)).expand()
+                    return imageset(Lambda(n, expr), S.Integers)
+                else:
+                    return
+            else:
+                return FiniteSet(*(fn.subs(n, s[0]) for s in solns))
+
+    if other == S.Reals:
+        from sympy.solvers.solvers import denoms, solve_linear
+
+        def _solution_union(exprs, sym):
+            # return a union of linear solutions to i in expr;
+            # if i cannot be solved, use a ConditionSet for solution
+            sols = []
+            for i in exprs:
+                x, xis = solve_linear(i, 0, [sym])
+                if x == sym:
+                    sols.append(FiniteSet(xis))
+                else:
+                    sols.append(ConditionSet(sym, Eq(i, 0)))
+            return Union(*sols)
+
+        f = self.lamda.expr
+        n = self.lamda.variables[0]
+
+        n_ = Dummy(n.name, real=True)
+        f_ = f.subs(n, n_)
+
+        re, im = f_.as_real_imag()
+        im = expand_complex(im)
+
+        re = re.subs(n_, n)
+        im = im.subs(n_, n)
+        ifree = im.free_symbols
+        lam = Lambda(n, re)
+        if im.is_zero:
+            # allow re-evaluation
+            # of self in this case to make
+            # the result canonical
+            pass
+        elif im.is_zero is False:
+            return S.EmptySet
+        elif ifree != {n}:
+            return None
+        else:
+            # univarite imaginary part in same variable;
+            # use numer instead of as_numer_denom to keep
+            # this as fast as possible while still handling
+            # simple cases
+            base_set &= _solution_union(
+                Mul.make_args(numer(im)), n)
+        # exclude values that make denominators 0
+        base_set -= _solution_union(denoms(f), n)
+        return imageset(lam, base_set)
+
+    elif isinstance(other, Interval):
+        from sympy.solvers.solveset import (invert_real, invert_complex,
+                                            solveset)
+
+        f = self.lamda.expr
+        n = self.lamda.variables[0]
+        new_inf, new_sup = None, None
+        new_lopen, new_ropen = other.left_open, other.right_open
+
+        if f.is_real:
+            inverter = invert_real
+        else:
+            inverter = invert_complex
+
+        g1, h1 = inverter(f, other.inf, n)
+        g2, h2 = inverter(f, other.sup, n)
+
+        if all(isinstance(i, FiniteSet) for i in (h1, h2)):
+            if g1 == n:
+                if len(h1) == 1:
+                    new_inf = h1.args[0]
+            if g2 == n:
+                if len(h2) == 1:
+                    new_sup = h2.args[0]
+            # TODO: Design a technique to handle multiple-inverse
+            # functions
+
+            # Any of the new boundary values cannot be determined
+            if any(i is None for i in (new_sup, new_inf)):
+                return
+
+
+            range_set = S.EmptySet
+
+            if all(i.is_real for i in (new_sup, new_inf)):
+                # this assumes continuity of underlying function
+                # however fixes the case when it is decreasing
+                if new_inf > new_sup:
+                    new_inf, new_sup = new_sup, new_inf
+                new_interval = Interval(new_inf, new_sup, new_lopen, new_ropen)
+                range_set = base_set.intersect(new_interval)
+            else:
+                if other.is_subset(S.Reals):
+                    solutions = solveset(f, n, S.Reals)
+                    if not isinstance(range_set, (ImageSet, ConditionSet)):
+                        range_set = solutions.intersect(other)
+                    else:
+                        return
+
+            if range_set is S.EmptySet:
+                return S.EmptySet
+            elif isinstance(range_set, Range) and range_set.size is not S.Infinity:
+                range_set = FiniteSet(*list(range_set))
+
+            if range_set is not None:
+                return imageset(Lambda(n, f), range_set)
+            return
+        else:
+            return
+
+
+@intersection_sets.register(ProductSet, ProductSet)
+def _(a, b):
+    if len(b.args) != len(a.args):
+        return S.EmptySet
+    return ProductSet(*(i.intersect(j) for i, j in zip(a.sets, b.sets)))
+
+
+@intersection_sets.register(Interval, Interval)
+def _(a, b):
+    # handle (-oo, oo)
+    infty = S.NegativeInfinity, S.Infinity
+    if a == Interval(*infty):
+        l, r = a.left, a.right
+        if l.is_real or l in infty or r.is_real or r in infty:
+            return b
+
+    # We can't intersect [0,3] with [x,6] -- we don't know if x>0 or x<0
+    if not a._is_comparable(b):
+        return None
+
+    empty = False
+
+    if a.start <= b.end and b.start <= a.end:
+        # Get topology right.
+        if a.start < b.start:
+            start = b.start
+            left_open = b.left_open
+        elif a.start > b.start:
+            start = a.start
+            left_open = a.left_open
+        else:
+            start = a.start
+            if not _aresame(a.start, b.start):
+                # For example Integer(2) != Float(2)
+                # Prefer the Float boundary because Floats should be
+                # contagious in calculations.
+                if b.start.has(Float) and not a.start.has(Float):
+                    start = b.start
+                elif a.start.has(Float) and not b.start.has(Float):
+                    start = a.start
+                else:
+                    #this is to ensure that if Eq(a.start, b.start) but
+                    #type(a.start) != type(b.start) the order of a and b
+                    #does not matter for the result
+                    start = list(ordered([a,b]))[0].start
+            left_open = a.left_open or b.left_open
+
+        if a.end < b.end:
+            end = a.end
+            right_open = a.right_open
+        elif a.end > b.end:
+            end = b.end
+            right_open = b.right_open
+        else:
+            # see above for logic with start
+            end = a.end
+            if not _aresame(a.end, b.end):
+                if b.end.has(Float) and not a.end.has(Float):
+                    end = b.end
+                elif a.end.has(Float) and not b.end.has(Float):
+                    end = a.end
+                else:
+                    end = list(ordered([a,b]))[0].end
+            right_open = a.right_open or b.right_open
+
+        if end - start == 0 and (left_open or right_open):
+            empty = True
+    else:
+        empty = True
+
+    if empty:
+        return S.EmptySet
+
+    return Interval(start, end, left_open, right_open)
+
+@intersection_sets.register(EmptySet, Set)
+def _(a, b):
+    return S.EmptySet
+
+@intersection_sets.register(UniversalSet, Set)
+def _(a, b):
+    return b
+
+@intersection_sets.register(FiniteSet, FiniteSet)
+def _(a, b):
+    return FiniteSet(*(a._elements & b._elements))
+
+@intersection_sets.register(FiniteSet, Set)
+def _(a, b):
+    try:
+        return FiniteSet(*[el for el in a if el in b])
+    except TypeError:
+        return None  # could not evaluate `el in b` due to symbolic ranges.
+
+@intersection_sets.register(Set, Set)
+def _(a, b):
+    return None
+
+@intersection_sets.register(Integers, Rationals)
+def _(a, b):
+    return a
+
+@intersection_sets.register(Naturals, Rationals)
+def _(a, b):
+    return a
+
+@intersection_sets.register(Rationals, Reals)
+def _(a, b):
+    return a
+
+def _intlike_interval(a, b):
+    try:
+        if b._inf is S.NegativeInfinity and b._sup is S.Infinity:
+            return a
+        s = Range(max(a.inf, ceiling(b.left)), floor(b.right) + 1)
+        return intersection_sets(s, b)  # take out endpoints if open interval
+    except ValueError:
+        return None
+
+@intersection_sets.register(Integers, Interval)
+def _(a, b):
+    return _intlike_interval(a, b)
+
+@intersection_sets.register(Naturals, Interval)
+def _(a, b):
+    return _intlike_interval(a, b)

openflamingo/lib/python3.10/site-packages/sympy/sets/handlers/issubset.py

@@ -0,0 +1,144 @@
+from sympy.core.singleton import S
+from sympy.core.symbol import Symbol
+from sympy.core.logic import fuzzy_and, fuzzy_bool, fuzzy_not, fuzzy_or
+from sympy.core.relational import Eq
+from sympy.sets.sets import FiniteSet, Interval, Set, Union, ProductSet
+from sympy.sets.fancysets import Complexes, Reals, Range, Rationals
+from sympy.multipledispatch import Dispatcher
+
+
+_inf_sets = [S.Naturals, S.Naturals0, S.Integers, S.Rationals, S.Reals, S.Complexes]
+
+
+is_subset_sets = Dispatcher('is_subset_sets')
+
+
+@is_subset_sets.register(Set, Set)
+def _(a, b):
+    return None
+
+@is_subset_sets.register(Interval, Interval)
+def _(a, b):
+    # This is correct but can be made more comprehensive...
+    if fuzzy_bool(a.start < b.start):
+        return False
+    if fuzzy_bool(a.end > b.end):
+        return False
+    if (b.left_open and not a.left_open and fuzzy_bool(Eq(a.start, b.start))):
+        return False
+    if (b.right_open and not a.right_open and fuzzy_bool(Eq(a.end, b.end))):
+        return False
+
+@is_subset_sets.register(Interval, FiniteSet)
+def _(a_interval, b_fs):
+    # An Interval can only be a subset of a finite set if it is finite
+    # which can only happen if it has zero measure.
+    if fuzzy_not(a_interval.measure.is_zero):
+        return False
+
+@is_subset_sets.register(Interval, Union)
+def _(a_interval, b_u):
+    if all(isinstance(s, (Interval, FiniteSet)) for s in b_u.args):
+        intervals = [s for s in b_u.args if isinstance(s, Interval)]
+        if all(fuzzy_bool(a_interval.start < s.start) for s in intervals):
+            return False
+        if all(fuzzy_bool(a_interval.end > s.end) for s in intervals):
+            return False
+        if a_interval.measure.is_nonzero:
+            no_overlap = lambda s1, s2: fuzzy_or([
+                    fuzzy_bool(s1.end <= s2.start),
+                    fuzzy_bool(s1.start >= s2.end),
+                    ])
+            if all(no_overlap(s, a_interval) for s in intervals):
+                return False
+
+@is_subset_sets.register(Range, Range)
+def _(a, b):
+    if a.step == b.step == 1:
+        return fuzzy_and([fuzzy_bool(a.start >= b.start),
+                          fuzzy_bool(a.stop <= b.stop)])
+
+@is_subset_sets.register(Range, Interval)
+def _(a_range, b_interval):
+    if a_range.step.is_positive:
+        if b_interval.left_open and a_range.inf.is_finite:
+            cond_left = a_range.inf > b_interval.left
+        else:
+            cond_left = a_range.inf >= b_interval.left
+        if b_interval.right_open and a_range.sup.is_finite:
+            cond_right = a_range.sup < b_interval.right
+        else:
+            cond_right = a_range.sup <= b_interval.right
+        return fuzzy_and([cond_left, cond_right])
+
+@is_subset_sets.register(Range, FiniteSet)
+def _(a_range, b_finiteset):
+    try:
+        a_size = a_range.size
+    except ValueError:
+        # symbolic Range of unknown size
+        return None
+    if a_size > len(b_finiteset):
+        return False
+    elif any(arg.has(Symbol) for arg in a_range.args):
+        return fuzzy_and(b_finiteset.contains(x) for x in a_range)
+    else:
+        # Checking A \ B == EmptySet is more efficient than repeated naive
+        # membership checks on an arbitrary FiniteSet.
+        a_set = set(a_range)
+        b_remaining = len(b_finiteset)
+        # Symbolic expressions and numbers of unknown type (integer or not) are
+        # all counted as "candidates", i.e. *potentially* matching some a in
+        # a_range.
+        cnt_candidate = 0
+        for b in b_finiteset:
+            if b.is_Integer:
+                a_set.discard(b)
+            elif fuzzy_not(b.is_integer):
+                pass
+            else:
+                cnt_candidate += 1
+            b_remaining -= 1
+            if len(a_set) > b_remaining + cnt_candidate:
+                return False
+            if len(a_set) == 0:
+                return True
+        return None
+
+@is_subset_sets.register(Interval, Range)
+def _(a_interval, b_range):
+    if a_interval.measure.is_extended_nonzero:
+        return False
+
+@is_subset_sets.register(Interval, Rationals)
+def _(a_interval, b_rationals):
+    if a_interval.measure.is_extended_nonzero:
+        return False
+
+@is_subset_sets.register(Range, Complexes)
+def _(a, b):
+    return True
+
+@is_subset_sets.register(Complexes, Interval)
+def _(a, b):
+    return False
+
+@is_subset_sets.register(Complexes, Range)
+def _(a, b):
+    return False
+
+@is_subset_sets.register(Complexes, Rationals)
+def _(a, b):
+    return False
+
+@is_subset_sets.register(Rationals, Reals)
+def _(a, b):
+    return True
+
+@is_subset_sets.register(Rationals, Range)
+def _(a, b):
+    return False
+
+@is_subset_sets.register(ProductSet, FiniteSet)
+def _(a_ps, b_fs):
+    return fuzzy_and(b_fs.contains(x) for x in a_ps)

openflamingo/lib/python3.10/site-packages/sympy/sets/handlers/power.py

@@ -0,0 +1,107 @@
+from sympy.core import Basic, Expr
+from sympy.core.function import Lambda
+from sympy.core.numbers import oo, Infinity, NegativeInfinity, Zero, Integer
+from sympy.core.singleton import S
+from sympy.core.symbol import symbols
+from sympy.functions.elementary.miscellaneous import (Max, Min)
+from sympy.sets.fancysets import ImageSet
+from sympy.sets.setexpr import set_div
+from sympy.sets.sets import Set, Interval, FiniteSet, Union
+from sympy.multipledispatch import Dispatcher
+
+
+_x, _y = symbols("x y")
+
+
+_set_pow = Dispatcher('_set_pow')
+
+
+@_set_pow.register(Basic, Basic)
+def _(x, y):
+    return None
+
+@_set_pow.register(Set, Set)
+def _(x, y):
+    return ImageSet(Lambda((_x, _y), (_x ** _y)), x, y)
+
+@_set_pow.register(Expr, Expr)
+def _(x, y):
+    return x**y
+
+@_set_pow.register(Interval, Zero)
+def _(x, z):
+    return FiniteSet(S.One)
+
+@_set_pow.register(Interval, Integer)
+def _(x, exponent):
+    """
+    Powers in interval arithmetic
+    https://en.wikipedia.org/wiki/Interval_arithmetic
+    """
+    s1 = x.start**exponent
+    s2 = x.end**exponent
+    if ((s2 > s1) if exponent > 0 else (x.end > -x.start)) == True:
+        left_open = x.left_open
+        right_open = x.right_open
+        # TODO: handle unevaluated condition.
+        sleft = s2
+    else:
+        # TODO: `s2 > s1` could be unevaluated.
+        left_open = x.right_open
+        right_open = x.left_open
+        sleft = s1
+
+    if x.start.is_positive:
+        return Interval(
+            Min(s1, s2),
+            Max(s1, s2), left_open, right_open)
+    elif x.end.is_negative:
+        return Interval(
+            Min(s1, s2),
+            Max(s1, s2), left_open, right_open)
+
+    # Case where x.start < 0 and x.end > 0:
+    if exponent.is_odd:
+        if exponent.is_negative:
+            if x.start.is_zero:
+                return Interval(s2, oo, x.right_open)
+            if x.end.is_zero:
+                return Interval(-oo, s1, True, x.left_open)
+            return Union(Interval(-oo, s1, True, x.left_open), Interval(s2, oo, x.right_open))
+        else:
+            return Interval(s1, s2, x.left_open, x.right_open)
+    elif exponent.is_even:
+        if exponent.is_negative:
+            if x.start.is_zero:
+                return Interval(s2, oo, x.right_open)
+            if x.end.is_zero:
+                return Interval(s1, oo, x.left_open)
+            return Interval(0, oo)
+        else:
+            return Interval(S.Zero, sleft, S.Zero not in x, left_open)
+
+@_set_pow.register(Interval, Infinity)
+def _(b, e):
+    # TODO: add logic for open intervals?
+    if b.start.is_nonnegative:
+        if b.end < 1:
+            return FiniteSet(S.Zero)
+        if b.start > 1:
+            return FiniteSet(S.Infinity)
+        return Interval(0, oo)
+    elif b.end.is_negative:
+        if b.start > -1:
+            return FiniteSet(S.Zero)
+        if b.end < -1:
+            return FiniteSet(-oo, oo)
+        return Interval(-oo, oo)
+    else:
+        if b.start > -1:
+            if b.end < 1:
+                return FiniteSet(S.Zero)
+            return Interval(0, oo)
+        return Interval(-oo, oo)
+
+@_set_pow.register(Interval, NegativeInfinity)
+def _(b, e):
+    return _set_pow(set_div(S.One, b), oo)

openflamingo/lib/python3.10/site-packages/sympy/sets/handlers/union.py

@@ -0,0 +1,147 @@
+from sympy.core.singleton import S
+from sympy.core.sympify import sympify
+from sympy.functions.elementary.miscellaneous import Min, Max
+from sympy.sets.sets import (EmptySet, FiniteSet, Intersection,
+    Interval, ProductSet, Set, Union, UniversalSet)
+from sympy.sets.fancysets import (ComplexRegion, Naturals, Naturals0,
+    Integers, Rationals, Reals)
+from sympy.multipledispatch import Dispatcher
+
+
+union_sets = Dispatcher('union_sets')
+
+
+@union_sets.register(Naturals0, Naturals)
+def _(a, b):
+    return a
+
+@union_sets.register(Rationals, Naturals)
+def _(a, b):
+    return a
+
+@union_sets.register(Rationals, Naturals0)
+def _(a, b):
+    return a
+
+@union_sets.register(Reals, Naturals)
+def _(a, b):
+    return a
+
+@union_sets.register(Reals, Naturals0)
+def _(a, b):
+    return a
+
+@union_sets.register(Reals, Rationals)
+def _(a, b):
+    return a
+
+@union_sets.register(Integers, Set)
+def _(a, b):
+    intersect = Intersection(a, b)
+    if intersect == a:
+        return b
+    elif intersect == b:
+        return a
+
+@union_sets.register(ComplexRegion, Set)
+def _(a, b):
+    if b.is_subset(S.Reals):
+        # treat a subset of reals as a complex region
+        b = ComplexRegion.from_real(b)
+
+    if b.is_ComplexRegion:
+        # a in rectangular form
+        if (not a.polar) and (not b.polar):
+            return ComplexRegion(Union(a.sets, b.sets))
+        # a in polar form
+        elif a.polar and b.polar:
+            return ComplexRegion(Union(a.sets, b.sets), polar=True)
+    return None
+
+@union_sets.register(EmptySet, Set)
+def _(a, b):
+    return b
+
+
+@union_sets.register(UniversalSet, Set)
+def _(a, b):
+    return a
+
+@union_sets.register(ProductSet, ProductSet)
+def _(a, b):
+    if b.is_subset(a):
+        return a
+    if len(b.sets) != len(a.sets):
+        return None
+    if len(a.sets) == 2:
+        a1, a2 = a.sets
+        b1, b2 = b.sets
+        if a1 == b1:
+            return a1 * Union(a2, b2)
+        if a2 == b2:
+            return Union(a1, b1) * a2
+    return None
+
+@union_sets.register(ProductSet, Set)
+def _(a, b):
+    if b.is_subset(a):
+        return a
+    return None
+
+@union_sets.register(Interval, Interval)
+def _(a, b):
+    if a._is_comparable(b):
+        # Non-overlapping intervals
+        end = Min(a.end, b.end)
+        start = Max(a.start, b.start)
+        if (end < start or
+           (end == start and (end not in a and end not in b))):
+            return None
+        else:
+            start = Min(a.start, b.start)
+            end = Max(a.end, b.end)
+
+            left_open = ((a.start != start or a.left_open) and
+                         (b.start != start or b.left_open))
+            right_open = ((a.end != end or a.right_open) and
+                          (b.end != end or b.right_open))
+            return Interval(start, end, left_open, right_open)
+
+@union_sets.register(Interval, UniversalSet)
+def _(a, b):
+    return S.UniversalSet
+
+@union_sets.register(Interval, Set)
+def _(a, b):
+    # If I have open end points and these endpoints are contained in b
+    # But only in case, when endpoints are finite. Because
+    # interval does not contain oo or -oo.
+    open_left_in_b_and_finite = (a.left_open and
+                                     sympify(b.contains(a.start)) is S.true and
+                                     a.start.is_finite)
+    open_right_in_b_and_finite = (a.right_open and
+                                      sympify(b.contains(a.end)) is S.true and
+                                      a.end.is_finite)
+    if open_left_in_b_and_finite or open_right_in_b_and_finite:
+        # Fill in my end points and return
+        open_left = a.left_open and a.start not in b
+        open_right = a.right_open and a.end not in b
+        new_a = Interval(a.start, a.end, open_left, open_right)
+        return {new_a, b}
+    return None
+
+@union_sets.register(FiniteSet, FiniteSet)
+def _(a, b):
+    return FiniteSet(*(a._elements | b._elements))
+
+@union_sets.register(FiniteSet, Set)
+def _(a, b):
+    # If `b` set contains one of my elements, remove it from `a`
+    if any(b.contains(x) == True for x in a):
+        return {
+            FiniteSet(*[x for x in a if b.contains(x) != True]), b}
+    return None
+
+@union_sets.register(Set, Set)
+def _(a, b):
+    return None

phi4/lib/python3.10/site-packages/fsspec/tests/abstract/__init__.py

@@ -0,0 +1,289 @@
+import os
+from hashlib import md5
+
+import pytest
+
+from fsspec.implementations.local import LocalFileSystem
+from fsspec.tests.abstract.copy import AbstractCopyTests  # noqa: F401
+from fsspec.tests.abstract.get import AbstractGetTests  # noqa: F401
+from fsspec.tests.abstract.open import AbstractOpenTests  # noqa: F401
+from fsspec.tests.abstract.pipe import AbstractPipeTests  # noqa: F401
+from fsspec.tests.abstract.put import AbstractPutTests  # noqa: F401
+
+
+class BaseAbstractFixtures:
+    """
+    Abstract base class containing fixtures that are used by but never need to
+    be overridden in derived filesystem-specific classes to run the abstract
+    tests on such filesystems.
+    """
+
+    @pytest.fixture
+    def fs_bulk_operations_scenario_0(self, fs, fs_join, fs_path):
+        """
+        Scenario on remote filesystem that is used for many cp/get/put tests.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._bulk_operations_scenario_0(fs, fs_join, fs_path)
+        yield source
+        fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def fs_glob_edge_cases_files(self, fs, fs_join, fs_path):
+        """
+        Scenario on remote filesystem that is used for glob edge cases cp/get/put tests.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._glob_edge_cases_files(fs, fs_join, fs_path)
+        yield source
+        fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def fs_dir_and_file_with_same_name_prefix(self, fs, fs_join, fs_path):
+        """
+        Scenario on remote filesystem that is used to check cp/get/put on directory
+        and file with the same name prefixes.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._dir_and_file_with_same_name_prefix(fs, fs_join, fs_path)
+        yield source
+        fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def fs_10_files_with_hashed_names(self, fs, fs_join, fs_path):
+        """
+        Scenario on remote filesystem that is used to check cp/get/put files order
+        when source and destination are lists.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._10_files_with_hashed_names(fs, fs_join, fs_path)
+        yield source
+        fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def fs_target(self, fs, fs_join, fs_path):
+        """
+        Return name of remote directory that does not yet exist to copy into.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        target = fs_join(fs_path, "target")
+        yield target
+        if fs.exists(target):
+            fs.rm(target, recursive=True)
+
+    @pytest.fixture
+    def local_bulk_operations_scenario_0(self, local_fs, local_join, local_path):
+        """
+        Scenario on local filesystem that is used for many cp/get/put tests.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._bulk_operations_scenario_0(local_fs, local_join, local_path)
+        yield source
+        local_fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def local_glob_edge_cases_files(self, local_fs, local_join, local_path):
+        """
+        Scenario on local filesystem that is used for glob edge cases cp/get/put tests.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._glob_edge_cases_files(local_fs, local_join, local_path)
+        yield source
+        local_fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def local_dir_and_file_with_same_name_prefix(
+        self, local_fs, local_join, local_path
+    ):
+        """
+        Scenario on local filesystem that is used to check cp/get/put on directory
+        and file with the same name prefixes.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._dir_and_file_with_same_name_prefix(
+            local_fs, local_join, local_path
+        )
+        yield source
+        local_fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def local_10_files_with_hashed_names(self, local_fs, local_join, local_path):
+        """
+        Scenario on local filesystem that is used to check cp/get/put files order
+        when source and destination are lists.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        source = self._10_files_with_hashed_names(local_fs, local_join, local_path)
+        yield source
+        local_fs.rm(source, recursive=True)
+
+    @pytest.fixture
+    def local_target(self, local_fs, local_join, local_path):
+        """
+        Return name of local directory that does not yet exist to copy into.
+
+        Cleans up at the end of each test it which it is used.
+        """
+        target = local_join(local_path, "target")
+        yield target
+        if local_fs.exists(target):
+            local_fs.rm(target, recursive=True)
+
+    def _glob_edge_cases_files(self, some_fs, some_join, some_path):
+        """
+        Scenario that is used for glob edge cases cp/get/put tests.
+        Creates the following directory and file structure:
+
+        📁 source
+        ├── 📄 file1
+        ├── 📄 file2
+        ├── 📁 subdir0
+        │   ├── 📄 subfile1
+        │   ├── 📄 subfile2
+        │   └── 📁 nesteddir
+        │       └── 📄 nestedfile
+        └── 📁 subdir1
+            ├── 📄 subfile1
+            ├── 📄 subfile2
+            └── 📁 nesteddir
+                └── 📄 nestedfile
+        """
+        source = some_join(some_path, "source")
+        some_fs.touch(some_join(source, "file1"))
+        some_fs.touch(some_join(source, "file2"))
+
+        for subdir_idx in range(2):
+            subdir = some_join(source, f"subdir{subdir_idx}")
+            nesteddir = some_join(subdir, "nesteddir")
+            some_fs.makedirs(nesteddir)
+            some_fs.touch(some_join(subdir, "subfile1"))
+            some_fs.touch(some_join(subdir, "subfile2"))
+            some_fs.touch(some_join(nesteddir, "nestedfile"))
+
+        return source
+
+    def _bulk_operations_scenario_0(self, some_fs, some_join, some_path):
+        """
+        Scenario that is used for many cp/get/put tests. Creates the following
+        directory and file structure:
+
+        📁 source
+        ├── 📄 file1
+        ├── 📄 file2
+        └── 📁 subdir
+            ├── 📄 subfile1
+            ├── 📄 subfile2
+            └── 📁 nesteddir
+                └── 📄 nestedfile
+        """
+        source = some_join(some_path, "source")
+        subdir = some_join(source, "subdir")
+        nesteddir = some_join(subdir, "nesteddir")
+        some_fs.makedirs(nesteddir)
+        some_fs.touch(some_join(source, "file1"))
+        some_fs.touch(some_join(source, "file2"))
+        some_fs.touch(some_join(subdir, "subfile1"))
+        some_fs.touch(some_join(subdir, "subfile2"))
+        some_fs.touch(some_join(nesteddir, "nestedfile"))
+        return source
+
+    def _dir_and_file_with_same_name_prefix(self, some_fs, some_join, some_path):
+        """
+        Scenario that is used to check cp/get/put on directory and file with
+        the same name prefixes. Creates the following directory and file structure:
+
+        📁 source
+        ├── 📄 subdir.txt
+        └── 📁 subdir
+            └── 📄 subfile.txt
+        """
+        source = some_join(some_path, "source")
+        subdir = some_join(source, "subdir")
+        file = some_join(source, "subdir.txt")
+        subfile = some_join(subdir, "subfile.txt")
+        some_fs.makedirs(subdir)
+        some_fs.touch(file)
+        some_fs.touch(subfile)
+        return source
+
+    def _10_files_with_hashed_names(self, some_fs, some_join, some_path):
+        """
+        Scenario that is used to check cp/get/put files order when source and
+        destination are lists. Creates the following directory and file structure:
+
+        📁 source
+        └── 📄 {hashed([0-9])}.txt
+        """
+        source = some_join(some_path, "source")
+        for i in range(10):
+            hashed_i = md5(str(i).encode("utf-8")).hexdigest()
+            path = some_join(source, f"{hashed_i}.txt")
+            some_fs.pipe(path=path, value=f"{i}".encode())
+        return source
+
+
+class AbstractFixtures(BaseAbstractFixtures):
+    """
+    Abstract base class containing fixtures that may be overridden in derived
+    filesystem-specific classes to run the abstract tests on such filesystems.
+
+    For any particular filesystem some of these fixtures must be overridden,
+    such as ``fs`` and ``fs_path``, and others may be overridden if the
+    default functions here are not appropriate, such as ``fs_join``.
+    """
+
+    @pytest.fixture
+    def fs(self):
+        raise NotImplementedError("This function must be overridden in derived classes")
+
+    @pytest.fixture
+    def fs_join(self):
+        """
+        Return a function that joins its arguments together into a path.
+
+        Most fsspec implementations join paths in a platform-dependent way,
+        but some will override this to always use a forward slash.
+        """
+        return os.path.join
+
+    @pytest.fixture
+    def fs_path(self):
+        raise NotImplementedError("This function must be overridden in derived classes")
+
+    @pytest.fixture(scope="class")
+    def local_fs(self):
+        # Maybe need an option for auto_mkdir=False?  This is only relevant
+        # for certain implementations.
+        return LocalFileSystem(auto_mkdir=True)
+
+    @pytest.fixture
+    def local_join(self):
+        """
+        Return a function that joins its arguments together into a path, on
+        the local filesystem.
+        """
+        return os.path.join
+
+    @pytest.fixture
+    def local_path(self, tmpdir):
+        return tmpdir
+
+    @pytest.fixture
+    def supports_empty_directories(self):
+        """
+        Return whether this implementation supports empty directories.
+        """
+        return True
+
+    @pytest.fixture
+    def fs_sanitize_path(self):
+        return lambda x: x