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garcia/oppositeday.py

Created November 2, 2013 22:29
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Swaps the values of False and True under CPython 2.7.5. Unlike the usual "False, True = True, False" prank, this alters the hardcoded values so that even built-in operations which return a boolean (like 1 == 1) return the opposite.
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oppositeday.py
import ctypes
import sys
for b, boolean in enumerate((False, True)):
(ctypes.c_char * sys.getsizeof(boolean)).from_address(id(boolean))[8] = chr(1 - b)
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