Bugs item #1378305, was opened at 2005-12-11 21:09
Message generated for change (Comment added) made by gbrandl
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Category: Parser/Compiler
Group: Python 2.4
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Guenter Jantzen (gjantzen)
Assigned to: Nobody/Anonymous (nobody)
Summary: Import value 1e400 from pyc fails
Initial Comment:
-------------------------------------------
#file: bug.py
#sys.version_info (2, 4, 2, 'final', 0)
#Platform is Windows XP
import sys, bug
infinity = 1e400
if __name__ == "__main__":
import bug
print "Infinity is", bug.infinity
------------------------------------------
This code behaves correct using bug.py - when bug.pyc
is not up to date / not exists:
Infinity is 1.#INF
and behaves wrong using bug.pyc - when bug.pyc is up to
date:
Infinity is 1.0
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>Comment By: Georg Brandl (gbrandl)
Date: 2007-03-19 16:30
Message:
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Fixed, then.
----------------------------------------------------------------------
Comment By: Sean Gillespie (sean_gillespie)
Date: 2007-03-19 13:24
Message:
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This does indeed seem to be fixed in Python2.5.
I was able to reproduce this with Python2.4 with similar results (Windows
XP again). However, in Python2.5, the results are as expected.
Python24:
> python.exe bug.pyc
Infinity is 1.0
Python25:
> python.exe bug.pyc
Infinity is 1.#INF
----------------------------------------------------------------------
Comment By: Josiah Carlson (josiahcarlson)
Date: 2005-12-14 06:10
Message:
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user_id=341410
This is a known bug with Python and floating point infinity
literals.
You can use:
infinity = 1e155 * 1e155
I believe this is fixed in the latest Python 2.5 SVN.
----------------------------------------------------------------------
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