classification
Title: Calculation involving mpmath gives wrong result with Python 3.6 and correct result with 2.7
Type: Stage: resolved
Components: IO Versions: Python 3.5
process
Status: closed Resolution: third party
Dependencies: Superseder:
Assigned To: Nosy List: alyasoff, ned.deily
Priority: normal Keywords:

Created on 2016-06-05 16:32 by alyasoff, last changed 2016-06-05 16:48 by ned.deily. This issue is now closed.

Files
File name Uploaded Description Edit
special_f_test.ipynb alyasoff, 2016-06-05 16:32 jupyter notebook
Messages (2)
msg267426 - (view) Author: Andrew Lyasoff (alyasoff) Date: 2016-06-05 16:32
A particular numerical expression involving mpmath produces the wrong result when evaluated with Python 3.5 and produces the correct result when evaluated with Python 2.7. The expression involves the commonly used erf (error) function.
msg267430 - (view) Author: Ned Deily (ned.deily) * (Python committer) Date: 2016-06-05 16:48
Mpmath is a separate project, not in the Python Standard Library.  I suggest you pursue the issue on its issue tracker, providing more information about exactly what results you see with what components (e.g. which OS platform and version, which versions of mpmath, etc).

http://mpmath.org
History
Date User Action Args
2016-06-05 16:48:02ned.deilysetstatus: open -> closed

nosy: + ned.deily
messages: + msg267430

resolution: third party
stage: resolved
2016-06-05 16:32:03alyasoffcreate