Issue 1170: problem with printing in 2.6
http://code.google.com/p/sympy/issues/detail?id=1170
New issue report by ondrej.certik:
Here is the main problem isolated:
[EMAIL PROTECTED]:~/repos/sympy$ python2.6 r.py
e1: [x**3, 1, x**4, x, x**2]
e2: [1, x, x**2, x**3, x**4]
set(e1): set([1, x, x**2, x**4, x**3])
set(e2): set([1, x, x**2, x**4, x**3])
spr(set(e1): set([x**2, x**3, x**4, 1, x])
spr(set(e2): set([x**2, x**3, x**4, 1, x])
[EMAIL PROTECTED]:~/repos/sympy$ vim r.py
[EMAIL PROTECTED]:~/repos/sympy$ vim r.py
[EMAIL PROTECTED]:~/repos/sympy$ cat r.py
from sympy import *
from sympy.core.basic import StrPrinter
var("x")
spr = StrPrinter.doprint
e1 = [x**3, 1, x**4, x, x**2]
e2 = [1, x, x**2, x**3, x**4]
print "e1:", e1
print "e2:", e2
print "set(e1):", set(e1)
print "set(e2):", set(e2)
print "spr(set(e1)):", spr(set(e1))
print "spr(set(e2)):", spr(set(e2))
[EMAIL PROTECTED]:~/repos/sympy$ python2.5 r.py
e1: [x**3, 1, x**4, x, x**2]
e2: [1, x, x**2, x**3, x**4]
set(e1): set([1, x, x**2, x**4, x**3])
set(e2): set([1, x, x**2, x**4, x**3])
spr(set(e1)): set([1, x, x**2, x**3, x**4])
spr(set(e2)): set([1, x, x**2, x**3, x**4])
[EMAIL PROTECTED]:~/repos/sympy$ python2.6 r.py
e1: [x**3, 1, x**4, x, x**2]
e2: [1, x, x**2, x**3, x**4]
set(e1): set([1, x, x**2, x**4, x**3])
set(e2): set([1, x, x**2, x**4, x**3])
spr(set(e1)): set([x**2, x**3, x**4, 1, x])
spr(set(e2)): set([x**2, x**3, x**4, 1, x])
Notice the lines with spr(set(e1)). They are sorted in python2.5 (and also
in 2.4, not shown here), but unsorted in python2.6.
Issue attributes:
Status: Accepted
Owner: ----
Labels: Type-Defect Priority-High
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