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27 lines
460 B
Python
27 lines
460 B
Python
def if__(cond, then, else_=lambda: None):
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if cond:
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return then()
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else:
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return else_()
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def for__(iterable, body):
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for i in iterable:
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body(i)
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def while__(cond_block, body):
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while cond_block():
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body()
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def with__(obj, body):
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obj.__enter__()
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body(e)
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obj.__exit__()
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def discard__(obj):
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pass
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def then__(x, f):
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if x == None or x == NotImplemented:
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return x
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else:
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return f(x)
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