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stringclasses
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stringclasses
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cpython
cfcd524
doctest
DebugRunner
>>> test = DocTestParser().get_doctest(''' ... >>> x = 2 ... ''', {}, 'foo', 'foo.py', 0)
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cpython
cfcd524
doctest
DebugRunner
>>> runner.run(test)
TestResults(failed=0, attempted=1)
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cpython
cfcd524
doctest
DebugRunner
>>> test.globs
{}
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cpython
cfcd524
doctest
doctest.set_unittest_reportflags
>>> import doctest
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cpython
cfcd524
doctest
doctest.set_unittest_reportflags
>>> old = doctest._unittest_reportflags
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cpython
cfcd524
doctest
doctest.set_unittest_reportflags
>>> doctest.set_unittest_reportflags(REPORT_NDIFF | ... REPORT_ONLY_FIRST_FAILURE) == old
True
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cpython
cfcd524
doctest
doctest.set_unittest_reportflags
>>> doctest._unittest_reportflags == (REPORT_NDIFF | ... REPORT_ONLY_FIRST_FAILURE)
True Only reporting flags can be set:
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cpython
cfcd524
doctest
doctest.set_unittest_reportflags
>>> doctest.set_unittest_reportflags(ELLIPSIS)
Traceback (most recent call last): ... ValueError: ('Only reporting flags allowed', 8)
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cpython
cfcd524
doctest
doctest.set_unittest_reportflags
>>> doctest.set_unittest_reportflags(old) == (REPORT_NDIFF | ... REPORT_ONLY_FIRST_FAILURE)
True
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cpython
cfcd524
doctest
DocTestCase.debug
>>> test = DocTestParser().get_doctest('>>> raise KeyError\n42', ... {}, 'foo', 'foo.py', 0)
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cpython
cfcd524
doctest
DocTestCase.debug
>>> case = DocTestCase(test)
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cpython
cfcd524
doctest
DocTestCase.debug
>>> try: ... case.debug() ... except UnexpectedException as f: ... failure = f
The UnexpectedException contains the test, the example, and the original exception:
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cpython
cfcd524
doctest
DocTestCase.debug
>>> failure.test is test
True
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cpython
cfcd524
doctest
DocTestCase.debug
>>> failure.example.want
'42\n'
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cpython
cfcd524
doctest
DocTestCase.debug
>>> exc_info = failure.exc_info
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cpython
cfcd524
doctest
DocTestCase.debug
>>> raise exc_info[1] # Already has the traceback
Traceback (most recent call last): ... KeyError If the output doesn't match, then a DocTestFailure is raised:
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cpython
cfcd524
doctest
DocTestCase.debug
>>> test = DocTestParser().get_doctest(''' ... >>> x = 1 ... >>> x ... 2 ... ''', {}, 'foo', 'foo.py', 0)
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cpython
cfcd524
doctest
DocTestCase.debug
>>> case = DocTestCase(test)
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cpython
cfcd524
doctest
DocTestCase.debug
>>> try: ... case.debug() ... except DocTestFailure as f: ... failure = f
DocTestFailure objects provide access to the test:
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cpython
cfcd524
doctest
DocTestCase.debug
>>> failure.test is test
True As well as to the example:
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cpython
cfcd524
doctest
DocTestCase.debug
>>> failure.example.want
'2\n' and the actual output:
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cpython
cfcd524
doctest
DocTestCase.debug
>>> failure.got
'1\n'
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cpython
cfcd524
doctest
DocFileCase.script_from_examples
>>> text = ''' ... Here are examples of simple math. ... ... Python has super accurate integer addition ... ... >>> 2 + 2 ... 5 ... ... And very friendly error messages: ... ... >>> 1/0 ... To Infinity ... And ... Beyond ... ... You can use logic if you want: ... ... >>> if 0: ... ... blah ... ... blah ... ... ... ... Ho hum ... '''
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cpython
cfcd524
doctest
DocFileCase.script_from_examples
>>> print(script_from_examples(text))
# Here are examples of simple math. # # Python has super accurate integer addition # 2 + 2 # Expected: ## 5 # # And very friendly error messages: # 1/0 # Expected: ## To Infinity ## And ## Beyond # # You can use logic if you want: # if 0: blah blah # # Ho hum <BLANKLINE>
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cpython
cfcd524
doctest
_TestClass
>>> _TestClass(13).get() + _TestClass(-12).get()
1
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cpython
cfcd524
doctest
_TestClass
>>> hex(_TestClass(13).square().get())
'0xa9'
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cpython
cfcd524
doctest
_TestClass.__init__
>>> t = _TestClass(123)
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cpython
cfcd524
doctest
_TestClass.__init__
>>> print(t.get())
123
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cpython
cfcd524
doctest
_TestClass.square
>>> _TestClass(13).square().get()
169
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cpython
cfcd524
doctest
_TestClass.get
>>> x = _TestClass(-42)
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cpython
cfcd524
doctest
_TestClass.get
>>> print(x.get())
-42
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cpython
cfcd524
doctest
_TestClass.get
>>> x = 1; y = 2
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cpython
cfcd524
doctest
_TestClass.get
>>> x + y, x * y
(3, 2)
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cpython
cfcd524
doctest
_TestClass.get
>>> 4 == 4
1
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cpython
cfcd524
doctest
_TestClass.get
>>> 4 == 4
True
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cpython
cfcd524
doctest
_TestClass.get
>>> 4 > 4
0
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cpython
cfcd524
doctest
_TestClass.get
>>> 4 > 4
False
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cpython
cfcd524
doctest
_TestClass.get
>>> print('foo\n\nbar\n')
foo <BLANKLINE> bar <BLANKLINE>
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cpython
cfcd524
doctest
_TestClass.get
>>> print(list(range(1000))) #doctest: +ELLIPSIS
[0, 1, 2, ..., 999]
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cpython
cfcd524
doctest
_TestClass.get
>>> print(list(range(30))) #doctest: +NORMALIZE_WHITESPACE
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29]
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cpython
cfcd524
zipfile._path.glob
Translator
>>> Translator('xyz')
Traceback (most recent call last): ... AssertionError: Invalid separators
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cpython
cfcd524
zipfile._path.glob
Translator
>>> Translator('')
Traceback (most recent call last): ... AssertionError: Invalid separators
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cpython
cfcd524
zipfile._path.glob
Translator.translate_core
>>> t = Translator()
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cpython
cfcd524
zipfile._path.glob
Translator.translate_core
>>> t.translate_core('*.txt').replace('\\\\', '')
'[^/]*\\.txt'
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cpython
cfcd524
zipfile._path.glob
Translator.translate_core
>>> t.translate_core('a?txt')
'a[^/]txt'
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cpython
cfcd524
zipfile._path.glob
Translator.translate_core
>>> t.translate_core('**/*').replace('\\\\', '')
'.*/[^/][^/]*'
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cpython
cfcd524
zipfile._path.glob
Translator.restrict_rglob
>>> Translator().translate('**foo')
Traceback (most recent call last): ... ValueError: ** must appear alone in a path segment
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cpython
cfcd524
zipfile._path.glob
Translator.separate
>>> [m.group(0) for m in separate('*.txt')]
['*.txt']
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cpython
cfcd524
zipfile._path.glob
Translator.separate
>>> [m.group(0) for m in separate('a[?]txt')]
['a', '[?]', 'txt']
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cpython
cfcd524
zipfile._path
_parents
>>> list(_parents('b/d'))
['b']
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cpython
cfcd524
zipfile._path
_parents
>>> list(_parents('/b/d/'))
['/b']
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cpython
cfcd524
zipfile._path
_parents
>>> list(_parents('b/d/f/'))
['b/d', 'b']
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cpython
cfcd524
zipfile._path
_parents
>>> list(_parents('b'))
[]
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cpython
cfcd524
zipfile._path
_parents
>>> list(_parents(''))
[]
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cpython
cfcd524
zipfile._path
_ancestry
>>> list(_ancestry('b/d'))
['b/d', 'b']
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cpython
cfcd524
zipfile._path
_ancestry
>>> list(_ancestry('/b/d/'))
['/b/d', '/b']
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cpython
cfcd524
zipfile._path
_ancestry
>>> list(_ancestry('b/d/f/'))
['b/d/f', 'b/d', 'b']
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cpython
cfcd524
zipfile._path
_ancestry
>>> list(_ancestry('b'))
['b']
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cpython
cfcd524
zipfile._path
_ancestry
>>> list(_ancestry(''))
[] Multiple separators are treated like a single.
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cpython
cfcd524
zipfile._path
_ancestry
>>> list(_ancestry('//b//d///f//'))
['//b//d///f', '//b//d', '//b']
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cpython
cfcd524
zipfile._path
CompleteDirs
>>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt']))
['foo/', 'foo/bar/']
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cpython
cfcd524
zipfile._path
CompleteDirs
>>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt', 'foo/bar/']))
['foo/']
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cpython
cfcd524
zipfile._path
Path
>>> data = io.BytesIO()
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cpython
cfcd524
zipfile._path
Path
>>> zf = ZipFile(data, 'w')
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cpython
cfcd524
zipfile._path
Path
>>> zf.writestr('a.txt', 'content of a')
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cpython
cfcd524
zipfile._path
Path
>>> zf.writestr('b/c.txt', 'content of c')
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cpython
cfcd524
zipfile._path
Path
>>> zf.writestr('b/d/e.txt', 'content of e')
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cpython
cfcd524
zipfile._path
Path
>>> zf.filename = 'mem/abcde.zip'
Path accepts the zipfile object itself or a filename
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cpython
cfcd524
zipfile._path
Path
>>> path = Path(zf)
From there, several path operations are available. Directory iteration (including the zip file itself):
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cpython
cfcd524
zipfile._path
Path
>>> a, b = path.iterdir()
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cpython
cfcd524
zipfile._path
Path
>>> a
Path('mem/abcde.zip', 'a.txt')
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cpython
cfcd524
zipfile._path
Path
>>> b
Path('mem/abcde.zip', 'b/') name property:
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cpython
cfcd524
zipfile._path
Path
>>> b.name
'b' join with divide operator:
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cpython
cfcd524
zipfile._path
Path
>>> c = b / 'c.txt'
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cpython
cfcd524
zipfile._path
Path
>>> c
Path('mem/abcde.zip', 'b/c.txt')
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cpython
cfcd524
zipfile._path
Path
>>> c.name
'c.txt' Read text:
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cpython
cfcd524
zipfile._path
Path
>>> c.read_text(encoding='utf-8')
'content of c' existence:
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cpython
cfcd524
zipfile._path
Path
>>> c.exists()
True
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cpython
cfcd524
zipfile._path
Path
>>> (b / 'missing.txt').exists()
False Coercion to string:
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cpython
cfcd524
zipfile._path
Path
>>> import os
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cpython
cfcd524
zipfile._path
Path
>>> str(c).replace(os.sep, posixpath.sep)
'mem/abcde.zip/b/c.txt' At the root, ``name``, ``filename``, and ``parent`` resolve to the zipfile.
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cpython
cfcd524
zipfile._path
Path
>>> str(path)
'mem/abcde.zip/'
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cpython
cfcd524
zipfile._path
Path
>>> path.name
'abcde.zip'
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cpython
cfcd524
zipfile._path
Path
>>> path.filename == pathlib.Path('mem/abcde.zip')
True
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cpython
cfcd524
zipfile._path
Path
>>> str(path.parent)
'mem' If the zipfile has no filename, such attributes are not valid and accessing them will raise an Exception.
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cpython
cfcd524
zipfile._path
Path
>>> zf.filename = None
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cpython
cfcd524
zipfile._path
Path
>>> path.name
Traceback (most recent call last): ... TypeError: ...
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cpython
cfcd524
zipfile._path
Path
>>> path.filename
Traceback (most recent call last): ... TypeError: ...
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cpython
cfcd524
zipfile._path
Path
>>> path.parent
Traceback (most recent call last): ... TypeError: ... # workaround python/cpython#106763
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cpython
cfcd524
zipfile._path
Path
>>> pass
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cpython
cfcd524
zipfile._path
Path.__eq__
>>> Path(zipfile.ZipFile(io.BytesIO(), 'w')) == 'foo'
False
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cpython
cfcd524
poplib
POP3.capa
>>> c=poplib.POP3('localhost')
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cpython
cfcd524
poplib
POP3.capa
>>> c.capa()
{'IMPLEMENTATION': ['Cyrus', 'POP3', 'server', 'v2.2.12'], 'TOP': [], 'LOGIN-DELAY': ['0'], 'AUTH-RESP-CODE': [], 'EXPIRE': ['NEVER'], 'USER': [], 'STLS': [], 'PIPELINING': [], 'UIDL': [], 'RESP-CODES': []}
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cpython
cfcd524
poplib
POP3.capa
>>>
Really, according to RFC 2449, the cyrus folks should avoid having the implementation split into multiple arguments...
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cpython
cfcd524
difflib
SequenceMatcher
>>> s = SequenceMatcher(lambda x: x == " ", ... "private Thread currentThread;", ... "private volatile Thread currentThread;")
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cpython
cfcd524
difflib
SequenceMatcher
>>>
.ratio() returns a float in [0, 1], measuring the "similarity" of the sequences. As a rule of thumb, a .ratio() value over 0.6 means the sequences are close matches:
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cpython
cfcd524
difflib
SequenceMatcher
>>> print(round(s.ratio(), 2))
0.87
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cpython
cfcd524
difflib
SequenceMatcher
>>>
If you're only interested in where the sequences match, .get_matching_blocks() is handy:
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cpython
cfcd524
difflib
SequenceMatcher
>>> for block in s.get_matching_blocks(): ... print("a[%d] and b[%d] match for %d elements" % block)
a[0] and b[0] match for 8 elements a[8] and b[17] match for 21 elements a[29] and b[38] match for 0 elements Note that the last tuple returned by .get_matching_blocks() is always a dummy, (len(a), len(b), 0), and this is the only case in which the last tuple element (number of elements matched) is 0. If you want to know how to change the first sequence into the second, use .get_opcodes():
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cpython
cfcd524
difflib
SequenceMatcher
>>> for opcode in s.get_opcodes(): ... print("%6s a[%d:%d] b[%d:%d]" % opcode)
equal a[0:8] b[0:8] insert a[8:8] b[8:17] equal a[8:29] b[17:38] See the Differ class for a fancy human-friendly file differencer, which uses SequenceMatcher both to compare sequences of lines, and to compare sequences of characters within similar (near-matching) lines. See also function get_close_matches() in this module, which shows how simple code building on SequenceMatcher can be used to do useful work. Timing: Basic R-O is cubic time worst case and quadratic time expected case. SequenceMatcher is quadratic time for the worst case and has expected-case behavior dependent in a complicated way on how many elements the sequences have in common; best case time is linear.
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