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stringclasses
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function
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stringclasses
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cpython
cfcd524
json
__module__
>>> import json
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cpython
cfcd524
json
__module__
>>> json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])
'["foo", {"bar": ["baz", null, 1.0, 2]}]'
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cpython
cfcd524
json
__module__
>>> print(json.dumps("\"foo\bar"))
"\"foo\bar"
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cpython
cfcd524
json
__module__
>>> print(json.dumps('\u1234'))
"\u1234"
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cpython
cfcd524
json
__module__
>>> print(json.dumps('\\'))
"\\"
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cpython
cfcd524
json
__module__
>>> print(json.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True))
{"a": 0, "b": 0, "c": 0}
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cpython
cfcd524
json
__module__
>>> from io import StringIO
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cpython
cfcd524
json
__module__
>>> io = StringIO()
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cpython
cfcd524
json
__module__
>>> json.dump(['streaming API'], io)
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cpython
cfcd524
json
__module__
>>> io.getvalue()
'["streaming API"]' Compact encoding::
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cpython
cfcd524
json
__module__
>>> import json
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cpython
cfcd524
json
__module__
>>> mydict = {'4': 5, '6': 7}
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cpython
cfcd524
json
__module__
>>> json.dumps([1,2,3,mydict], separators=(',', ':'))
'[1,2,3,{"4":5,"6":7}]' Pretty printing::
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cpython
cfcd524
json
__module__
>>> import json
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cpython
cfcd524
json
__module__
>>> print(json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4))
{ "4": 5, "6": 7 } Decoding JSON::
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cpython
cfcd524
json
__module__
>>> import json
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cpython
cfcd524
json
__module__
>>> obj = ['foo', {'bar': ['baz', None, 1.0, 2]}]
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cpython
cfcd524
json
__module__
>>> json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]') == obj
True
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cpython
cfcd524
json
__module__
>>> json.loads('"\\"foo\\bar"') == '"foo\x08ar'
True
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cpython
cfcd524
json
__module__
>>> from io import StringIO
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cpython
cfcd524
json
__module__
>>> io = StringIO('["streaming API"]')
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cpython
cfcd524
json
__module__
>>> json.load(io)[0] == 'streaming API'
True Specializing JSON object decoding::
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cpython
cfcd524
json
__module__
>>> import json
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cpython
cfcd524
json
__module__
>>> def as_complex(dct): ... if '__complex__' in dct: ... return complex(dct['real'], dct['imag']) ... return dct ...
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cpython
cfcd524
json
__module__
>>> json.loads('{"__complex__": true, "real": 1, "imag": 2}', ... object_hook=as_complex)
(1+2j)
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cpython
cfcd524
json
__module__
>>> from decimal import Decimal
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cpython
cfcd524
json
__module__
>>> json.loads('1.1', parse_float=Decimal) == Decimal('1.1')
True Specializing JSON object encoding::
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cpython
cfcd524
json
__module__
>>> import json
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cpython
cfcd524
json
__module__
>>> def encode_complex(obj): ... if isinstance(obj, complex): ... return [obj.real, obj.imag] ... raise TypeError(f'Object of type {obj.__class__.__name__} ' ... f'is not JSON serializable') ...
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cpython
cfcd524
json
__module__
>>> json.dumps(2 + 1j, default=encode_complex)
'[2.0, 1.0]'
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cpython
cfcd524
json
__module__
>>> json.JSONEncoder(default=encode_complex).encode(2 + 1j)
'[2.0, 1.0]'
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cpython
cfcd524
json
__module__
>>> ''.join(json.JSONEncoder(default=encode_complex).iterencode(2 + 1j))
'[2.0, 1.0]' Using json from the shell to validate and pretty-print:: $ echo '{"json":"obj"}' | python -m json { "json": "obj" } $ echo '{ 1.2:3.4}' | python -m json Expecting property name enclosed in double quotes: line 1 column 3 (char 2)
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cpython
cfcd524
json.encoder
JSONEncoder.encode
>>> from json.encoder import JSONEncoder
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cpython
cfcd524
json.encoder
JSONEncoder.encode
>>> JSONEncoder().encode({"foo": ["bar", "baz"]})
'{"foo": ["bar", "baz"]}'
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cpython
cfcd524
textwrap
TextWrapper.shorten
>>> textwrap.shorten("Hello world!", width=12)
'Hello world!'
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cpython
cfcd524
textwrap
TextWrapper.shorten
>>> textwrap.shorten("Hello world!", width=11)
'Hello [...]'
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cpython
cfcd524
turtle
TurtleScreenBase._pointlist
>>> from turtle import *
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cpython
cfcd524
turtle
TurtleScreenBase._pointlist
>>> getscreen()._pointlist(getturtle().turtle._item)
[(0.0, 9.9999999999999982), (0.0, -9.9999999999999982), (9.9999999999999982, 0.0)]
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cpython
cfcd524
turtle
TurtleScreenBase._pointlist
>>>
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cpython
cfcd524
turtle
TurtleScreenBase.mainloop
>>> screen.mainloop()
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cpython
cfcd524
turtle
TurtleScreenBase.textinput
>>> screen.textinput("NIM", "Name of first player:")
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cpython
cfcd524
turtle
TurtleScreenBase.numinput
>>> screen.numinput("Poker", "Your stakes:", 1000, minval=10, maxval=10000)
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cpython
cfcd524
turtle
Shape.addcomponent
>>> poly = ((0,0),(10,-5),(0,10),(-10,-5))
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cpython
cfcd524
turtle
Shape.addcomponent
>>> s = Shape("compound")
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cpython
cfcd524
turtle
Shape.addcomponent
>>> s.addcomponent(poly, "red", "blue")
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cpython
cfcd524
turtle
Shape.addcomponent
>>> # .. add more components and then use register_shape()
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cpython
cfcd524
turtle
TurtleScreen.clear
>>> screen.clear()
Note: this method is not available as function.
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cpython
cfcd524
turtle
TurtleScreen.mode
>>> mode('logo') # resets turtle heading to north
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cpython
cfcd524
turtle
TurtleScreen.mode
>>> mode()
'logo'
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cpython
cfcd524
turtle
TurtleScreen.setworldcoordinates
>>> screen.setworldcoordinates(-10,-0.5,50,1.5)
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cpython
cfcd524
turtle
TurtleScreen.setworldcoordinates
>>> for _ in range(36): ... left(10) ... forward(0.5)
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cpython
cfcd524
turtle
TurtleScreen.register_shape
>>> screen.register_shape("triangle", ((5,-3),(0,5),(-5,-3)))
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cpython
cfcd524
turtle
TurtleScreen.colormode
>>> screen.colormode()
1.0
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cpython
cfcd524
turtle
TurtleScreen.colormode
>>> screen.colormode(255)
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cpython
cfcd524
turtle
TurtleScreen.colormode
>>> pencolor(240,160,80)
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cpython
cfcd524
turtle
TurtleScreen.reset
>>> screen.reset()
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cpython
cfcd524
turtle
TurtleScreen.turtles
>>> screen.turtles()
[<turtle.Turtle object at 0x00E11FB0>]
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cpython
cfcd524
turtle
TurtleScreen.bgcolor
>>> screen.bgcolor("orange")
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cpython
cfcd524
turtle
TurtleScreen.bgcolor
>>> screen.bgcolor()
'orange'
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cpython
cfcd524
turtle
TurtleScreen.bgcolor
>>> colormode(255)
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cpython
cfcd524
turtle
TurtleScreen.bgcolor
>>> screen.bgcolor('#800080')
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cpython
cfcd524
turtle
TurtleScreen.bgcolor
>>> screen.bgcolor()
(128.0, 0.0, 128.0)
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cpython
cfcd524
turtle
TurtleScreen.tracer
>>> screen.tracer(8, 25)
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cpython
cfcd524
turtle
TurtleScreen.tracer
>>> dist = 2
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cpython
cfcd524
turtle
TurtleScreen.tracer
>>> for i in range(200): ... fd(dist) ... rt(90) ... dist += 2
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cpython
cfcd524
turtle
TurtleScreen.delay
>>> screen.delay(15)
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cpython
cfcd524
turtle
TurtleScreen.delay
>>> screen.delay()
15
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cpython
cfcd524
turtle
TurtleScreen.no_animation
>>> with screen.no_animation(): ... turtle.circle(50)
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cpython
cfcd524
turtle
TurtleScreen.window_width
>>> screen.window_width()
640
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cpython
cfcd524
turtle
TurtleScreen.window_height
>>> screen.window_height()
480
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cpython
cfcd524
turtle
TurtleScreen.getcanvas
>>> cv = screen.getcanvas()
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cpython
cfcd524
turtle
TurtleScreen.getcanvas
>>> cv
<turtle.ScrolledCanvas instance at 0x010742D8>
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cpython
cfcd524
turtle
TurtleScreen.getshapes
>>> screen.getshapes()
['arrow', 'blank', 'circle', ... , 'turtle']
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cpython
cfcd524
turtle
TurtleScreen.onclick
>>> screen.onclick(goto)
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cpython
cfcd524
turtle
TurtleScreen.onclick
>>> # Subsequently clicking into the TurtleScreen will
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cpython
cfcd524
turtle
TurtleScreen.onclick
>>> # make the turtle move to the clicked point.
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cpython
cfcd524
turtle
TurtleScreen.onclick
>>> screen.onclick(None)
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cpython
cfcd524
turtle
TurtleScreen.onkey
>>> def f(): ... fd(50) ... lt(60) ...
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cpython
cfcd524
turtle
TurtleScreen.onkey
>>> screen.onkey(f, "Up")
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cpython
cfcd524
turtle
TurtleScreen.onkey
>>> screen.listen()
Subsequently the turtle can be moved by repeatedly pressing the up-arrow key, consequently drawing a hexagon
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cpython
cfcd524
turtle
TurtleScreen.onkeypress
>>> def f(): ... fd(50) ... lt(60) ...
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cpython
cfcd524
turtle
TurtleScreen.onkeypress
>>> screen.onkeypress(f, "Up")
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cpython
cfcd524
turtle
TurtleScreen.onkeypress
>>> screen.listen()
Subsequently the turtle can be moved by repeatedly pressing the up-arrow key, or by keeping pressed the up-arrow key. consequently drawing a hexagon.
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cpython
cfcd524
turtle
TurtleScreen.listen
>>> screen.listen()
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cpython
cfcd524
turtle
TurtleScreen.ontimer
>>> running = True
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cpython
cfcd524
turtle
TurtleScreen.ontimer
>>> def f(): ... if running: ... fd(50) ... lt(60) ... screen.ontimer(f, 250) ...
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cpython
cfcd524
turtle
TurtleScreen.ontimer
>>> f() # makes the turtle marching around
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cpython
cfcd524
turtle
TurtleScreen.ontimer
>>> running = False
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cpython
cfcd524
turtle
TurtleScreen.bgpic
>>> screen.bgpic()
'nopic'
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cpython
cfcd524
turtle
TurtleScreen.bgpic
>>> screen.bgpic("landscape.gif")
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cpython
cfcd524
turtle
TurtleScreen.bgpic
>>> screen.bgpic()
'landscape.gif'
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cpython
cfcd524
turtle
TurtleScreen.screensize
>>> turtle.screensize(2000,1500)
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cpython
cfcd524
turtle
TurtleScreen.screensize
>>> # e.g. to search for an erroneously escaped turtle ;-)
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cpython
cfcd524
turtle
TurtleScreen.save
>>> screen.save('my_drawing.eps')
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cpython
cfcd524
turtle
TNavigator.degrees
>>> turtle.left(90)
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cpython
cfcd524
turtle
TNavigator.degrees
>>> turtle.heading()
90 Change angle measurement unit to grad (also known as gon, grade, or gradian and equals 1/100-th of the right angle.)
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cpython
cfcd524
turtle
TNavigator.degrees
>>> turtle.degrees(400.0)
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cpython
cfcd524
turtle
TNavigator.degrees
>>> turtle.heading()
100
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cpython
cfcd524
turtle
TNavigator.radians
>>> turtle.heading()
90
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cpython
cfcd524
turtle
TNavigator.radians
>>> turtle.radians()
null