I was adding __all__ to the random module and I noticed this very unpythonic
example in the module docstring:
>>> g = Random(42) # arbitrary
>>> g.random()
0.25420336316883324
>>> g.jumpahead(6953607871644L - 1) # move *back* one
>>> g.random()
0.25420336316883324
Presuming backing up the seed is a reasonable thing to do (I haven't got
much experience with random numbers), why doesn't the Random class have a
jumpback method instead of forcing the user to know the magic number to use
with jumpahead?
def jumpback(self, n):
return self.jumpahead(6953607871644L - n)
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