51 lines
889 B
Python
51 lines
889 B
Python
# Test that returning of NotImplemented from binary op methods leads to
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# TypeError.
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try:
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NotImplemented
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except NameError:
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print("SKIP")
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raise SystemExit
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class C:
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def __init__(self, value):
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self.value = value
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def __str__(self):
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return "C(%s)" % self.value
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def __add__(self, rhs):
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print(self, '+', rhs)
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return NotImplemented
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def __sub__(self, rhs):
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print(self, '-', rhs)
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return NotImplemented
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def __lt__(self, rhs):
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print(self, '<', rhs)
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return NotImplemented
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def __neg__(self):
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print('-', self)
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return NotImplemented
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c = C(0)
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try:
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c + 1
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except TypeError:
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print("TypeError")
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try:
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c - 2
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except TypeError:
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print("TypeError")
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try:
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c < 1
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except TypeError:
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print("TypeError")
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# NotImplemented isn't handled specially in unary methods
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print(-c)
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