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sympy fails to construct (1 + x)*x with disabled cache #8840

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DLunin opened this Issue Jan 17, 2015 · 0 comments

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DLunin commented Jan 17, 2015

python v. 3.4, sympy v. 0.7.6
When caching is disabled (i.e. SYMPY_USE_CACHE=no)

from sympy import *
var('x')
expr = (1 + x)*x

goes to infinite recursion.

skirpichev added a commit to diofant/diofant that referenced this issue Oct 2, 2015

Fix infinite recursions when caching is disabled
Refactor some assumptions helpers for Mul to reduce circularity.
Fixes sympy/sympy#8840, fixes sympy/sympy#9413, fixes sin(x + x).
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