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53 lines
1.0 KiB
Python
53 lines
1.0 KiB
Python
assert True
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assert not False
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assert 5
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assert not 0
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assert not []
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assert not ()
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assert not {}
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assert not ""
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assert not 0.0
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assert not None
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assert bool() == False
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assert bool(1) == True
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assert bool({}) == False
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if not 1:
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raise BaseException
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if not {} and not [1]:
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raise BaseException
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if not object():
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raise BaseException
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class Falsey:
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def __bool__(self):
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return False
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assert not Falsey()
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assert (True or fake)
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assert (False or True)
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assert not (False or False)
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assert ("thing" or 0) == "thing"
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assert (True and True)
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assert not (False and fake)
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assert (True and 5) == 5
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assert bool.__doc__ == "bool(x) -> bool\n\nReturns True when the argument x is true, False otherwise.\nThe builtins True and False are the only two instances of the class bool.\nThe class bool is a subclass of the class int, and cannot be subclassed."
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# Bools are also ints.
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assert isinstance(True, int)
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assert True + True == 2
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assert False * 7 == 0
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assert True > 0
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assert int(True) == 1
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assert True.conjugate() == 1
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assert isinstance(True.conjugate(), int)
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