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bukzor/gist:3751495

Created September 19, 2012 18:56
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gistfile1.py
>>> import sys
>>> sys.modules['math']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 'math'
>>> import math
>>> sys.modules['math']
<module 'math' (built-in)>
>>> del sys.modules['math']
>>> math
<module 'math' (built-in)>
>>> del math
>>> math
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'math' is not defined
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