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SF patch 483059: Avoid use of eval() in random.py, from Finn Bock. 

_verify():  Pass in the values of globals insted of eval()ing their
names.  The use of eval() was obscure and unnecessary, and the patch
claimed random.py couldn't be used in Jython applets because of it.
This commit is contained in:
Tim Peters 2001-11-25 21:12:43 +00:00
parent 652e1917c6
commit dc47a89ff1
1 changed files with 5 additions and 6 deletions
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11
Lib/random.py
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@ -82,24 +82,23 @@ __all__ = ["Random","seed","random","uniform","randint","choice",
"stdgamma","gauss","betavariate","paretovariate","weibullvariate",
"getstate","setstate","jumpahead","whseed"]
def _verify(name, expected):
computed = eval(name)
def _verify(name, computed, expected):
if abs(computed - expected) > 1e-7:
raise ValueError(
"computed value for %s deviates too much "
"(computed %g, expected %g)" % (name, computed, expected))
NV_MAGICCONST = 4 * _exp(-0.5)/_sqrt(2.0)
_verify('NV_MAGICCONST', 1.71552776992141)
_verify('NV_MAGICCONST', NV_MAGICCONST, 1.71552776992141)
TWOPI = 2.0*_pi
_verify('TWOPI', 6.28318530718)
_verify('TWOPI', TWOPI, 6.28318530718)
LOG4 = _log(4.0)
_verify('LOG4', 1.38629436111989)
_verify('LOG4', LOG4, 1.38629436111989)
SG_MAGICCONST = 1.0 + _log(4.5)
_verify('SG_MAGICCONST', 2.50407739677627)
_verify('SG_MAGICCONST', SG_MAGICCONST, 2.50407739677627)
del _verify