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Comment #13 on issue 841 by asmeurer: integrate(exp(-x**2)*exp(I*k*x), (x,
-oo, oo)) doesn't calculate the integral
http://code.google.com/p/sympy/issues/detail?id=841
Another (and in my opinion, better, until we can get the solution mentioned
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Comment #12 on issue 895 by asmeurer: series method does not work if the
point is not 0
http://code.google.com/p/sympy/issues/detail?id=895
Chris, how does this relate to the work you were doing on this recently?
Also, r
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Comment #7 on issue 1009 by asmeurer: solve(e, k) hangs
http://code.google.com/p/sympy/issues/detail?id=1009
OK, I can reproduce the problem with the cache turned off (btw, for those
who don't remember you run without the
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Comment #14 on issue 1065 by asmeurer: Good function plotting
http://code.google.com/p/sympy/issues/detail?id=1065
Rescheduling again.
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Comment #36 on issue 1646 by asmeurer: Solving inequalities
http://code.google.com/p/sympy/issues/detail?id=1646
Issue 1253 has been merged into this issue.
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Comment #5 on issue 1253 by asmeurer: enhance the solver to handle
inequalities
http://code.google.com/p/sympy/issues/detail?id=1253
This issue is older, but there has been quite a bit more discussion over at
is
Comment #10 on issue 1276 by mattpap: solve(-1 + x**2 +
0.111*(1.00 + 2.00*x)**2,x) fails
http://code.google.com/p/sympy/issues/detail?id=1276
Yes, this was fixed completely.
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Comment #10 on issue 1946 by mattpap: Recursion error with
SYMPY_GROUND_TYPES=sympy (caching problem)
http://code.google.com/p/sympy/issues/detail?id=1946
Partially yes, because #3 is 24dc2568f61b8cba715c919d4d5b33732714043d in
polys12. However, I didn't touch the patch from #4.
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Comment #8 on issue 588 by mattpap: simplify should be better at detecting
repeated factors
http://code.google.com/p/sympy/issues/detail?id=588
We should rewrite simplify() with factor() and other recently improved
function. However, before we do this, we should have good expression
compl
Comment #27 on issue 2132 by mattpap: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
Now it can:
In [1]: f = 161*z**3 + 115*z**2 + 19*z + 1
In [2]: g = Lambda(z, z*log(-3381*z**4/4 - 3381*z**3/4 - 625*z**2/2 -
125*z/2 - 5 + exp(x)))
In [3]: RootSum(f, g)
Out[3]:
Comment #28 on issue 2132 by mattpap: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
It's pretty slow though (70% of time being spent in expand() (the most
annoying function in SymPy for me)).
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Comment #29 on issue 2132 by mattpap: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
In 30c7fa78690828a0ac12b0e84c7ede31f4d4beff in polys12 I also fixed the
problem with subs() (actually I fixed RootOf(*RootOf(...).args)).
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Comment #30 on issue 2132 by mattpap: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
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Comment #31 on issue 2132 by Vinzent.Steinberg: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
Do you use the general expand() or a specialized version, that does not try
to expand everything? I think there are many low-hanging fruits in
expand()...
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Comment #8 on issue 2133 by mattpap: Merge new polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=2133
I tracked this problem to:
import math
math.log(4, 2)
2.0
math.log(4L, 2)
1.9998
in Python 2.7.
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Comment #5 on issue 1942 by jensen.oyvind: Refactor the singleton mechanism
http://code.google.com/p/sympy/issues/detail?id=1942
I reviewed the pull request and I like it. But I am not so familiar with
metaclass hacking, so perhaps one of the more experienced developers should
have a look a
Status: Accepted
Owner: jensen.oyvind
Labels: Type-Defect Priority-Medium Milestone-Release0.7.0
New issue 2141 by jensen.oyvind: improve simplifications by dummy
substitution in secondquant
http://code.google.com/p/sympy/issues/detail?id=2141
This is just a reminder so that pull request
ht
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Comment #9 on issue 2133 by mattpap: Merge new polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=2133
In 33d65af124b5096ddfde5334b658a55f32b76f2b in polys12 I made it work by
changing math.log(arg, base) to
Updates:
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Comment #1 on issue 2141 by jensen.oyvind: improve simplifications by dummy
substitution in secondquant
http://code.google.com/p/sympy/issues/detail?id=2141
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Comment #22 on issue 1545 by christian.muise: Efficient data representation
in logic.satisfiable()
http://code.google.com/p/sympy/issues/detail?id=1545
Do you have a test for measuring this performance? If so, could you give
this a try:
- https://github.com/sympy/sympy/pull/69
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Comment #7 on issue 2031 by mattpap: Add 'auto' flag to div(), quo() and
rem()
http://code.google.com/p/sympy/issues/detail?id=2031
No, this is a too deep change at this point. Rescheduling for 0.7.1.
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Comment #6 on issue 1942 by Vinzent.Steinberg: Refactor the singleton
mechanism
http://code.google.com/p/sympy/issues/detail?id=1942
Ronan is probably the most experienced developer we have. :)
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Comment #11 on issue 1276 by asmeurer: solve(-1 + x**2 +
0.111*(1.00 + 2.00*x)**2,x) fails
http://code.google.com/p/sympy/issues/detail?id=1276
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Issue 2133: Merge new polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=2133
This issue is now blocking issue 1276.
See http://code.google.com/p/sympy/issues/detail?id=1276
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Comment #11 on issue 1946 by asmeurer: Recursion error with
SYMPY_GROUND_TYPES=sympy (caching problem)
http://code.google.com/p/sympy/issues/detail?id=1946
Well, I think this is important, so I created a patch to fix it. Actually,
with the way
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Comment #9 on issue 588 by asmeurer: simplify should be better at detecting
repeated factors
http://code.google.com/p/sympy/issues/detail?id=588
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Comment #32 on issue 2132 by asmeurer: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
So implementing Frac() will make this faster by allowing it to do expand
entirely in Poly?
And I totally agree with you about expand(). Let's make it a priority to
make it fas
Comment #2 on issue 2141 by asmeurer: improve simplifications by dummy
substitution in secondquant
http://code.google.com/p/sympy/issues/detail?id=2141
Øyvind, I have given you push access to the main repo, so you can push this
(and other positively reviewed branches) in.
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Comment #33 on issue 2132 by asmeurer: Derivative of RootSum
http://code.google.com/p/sympy/issues/detail?id=2132
And by the way, my example now works (I forgot to throw in a term):
In [6]: cancel((a + x).diff(x))
Out[6]:
1
─
x5⋅x
1 + ℯ + ℯ
So this is exactly what I
Updates:
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Comment #10 on issue 2133 by asmeurer: Merge new polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=2133
Regarding the math.log issue, isn't that to be expected, since math.log is
a floating point function.
Comment #11 on issue 2133 by mattpap: Merge new polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=2133
This is what Python devs wrote in bugs.python.org. This is of course
correct explanation but in this (an a few other) special case the algorithm
could retur
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Comment #4 on issue 1280 by asmeurer: integrate(1/((a-x)*(b-x)), x) is
giving too complex results (probably correct)
http://code.google.com/p/sympy/issues/detail?id=1280
I was implementing this in my branch when I found a
Comment #30 on issue 1306 by asmeurer: Test the rst docs' pretty printing
http://code.google.com/p/sympy/issues/detail?id=1306
From what I understand above, the problem is in testing pretty printed
dictionaries. The regular doctester canonizes the order of dictionaries
and sets so that you
Comment #21 on issue 1337 by asmeurer: find all instances in an expression
http://code.google.com/p/sympy/issues/detail?id=1337
atoms seems to be a little slower (though not by much):
In [10]: %timeit f.atoms(tan)
1 loops, best of 3: 90.5 us per loop
In [11]: %timeit f.find(tan)
1 loop
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Comment #4 on issue 1353 by asmeurer: solve() doesn't work with Sage types
as input
http://code.google.com/p/sympy/issues/detail?id=1353
Does anyone have the capability to test/fix this? I myself do not have
Sage insta
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Comment #9 on issue 1371 by asmeurer: use scipy for integrals evaluation
http://code.google.com/p/sympy/issues/detail?id=1371
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Comment #3 on issue 1372 by asmeurer: make lambdify to use scipy for
integration optionally
http://code.google.com/p/sympy/issues/detail?id=1372
What is the difference between this issue and issue 1371?
There was also th
Comment #45 on issue 1778 by asmeurer: Rational from string can be improved
http://code.google.com/p/sympy/issues/detail?id=1778
That pull request was closed. Is this issue fixed, and if so, are the
blocked on issues fixed?
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Comment #20 on issue 1374 by asmeurer: simplify(x**2-x**2.0) does not yield
0.
http://code.google.com/p/sympy/issues/detail?id=1374
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Cc: Vinzent.Steinberg Ronan.Lamy
Comment #8 on issue 1376 by asmeurer: sympy.sum overrides built-in sum with
a different call syntax
http://code.google.com/p/sympy/issues/detail?id=1376
As far as I can tell, this change is still there in polys12. Are you guys
still -1, bec
Updates:
Status: Accepted
Comment #1 on issue 1779 by asmeurer: When atan2 is used, expression can
not be differentiated anymore.
http://code.google.com/p/sympy/issues/detail?id=1779
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Comment #22 on issue 1337 by Vinzent.Steinberg: find all instances in an
expression
http://code.google.com/p/sympy/issues/detail?id=1337
By the way, this can be very useful for an expression rewriting function
This was actually the motivation for opening this issue. :)
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Issue 2041: Doctest failures in Python 2.6.6
http://code.google.com/p/sympy/issues/detail?id=2041
This issue is now blocking issue 1379.
See http://code.google.com/p/sympy/issues/detail?id=1379
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Updates:
Blockedon: 1947 2041
Comment #4 on issue 1379 by asmeurer: documentation tests fail when run in
interactive mode
http://code.google.com/p/sympy/issues/detail?id=1379
After the fixes from issue 2041 and issue 1947 it runs fine in a regular
Python interpreter (clearly, based
Issue 1947: @property methods are not doctested
http://code.google.com/p/sympy/issues/detail?id=1947
This issue is now blocking issue 1379.
See http://code.google.com/p/sympy/issues/detail?id=1379
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Comment #5 on issue 1386 by asmeurer: data/IPython/ipythonrc-sympy doesn't
seem to work:
http://code.google.com/p/sympy/issues/detail?id=1386
So based on your modifications to that code, do you think we should
unify "from sympy.interactive import *" and init_
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Comment #7 on issue 1422 by asmeurer: spherical bessel functions
http://code.google.com/p/sympy/issues/detail?id=1422
Ondrej, you recently got some Bessel stuff in. Is this issue still valid
after that?
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Comment #23 on issue 1467 by asmeurer: sorting values with imaginary
numbers in radical
http://code.google.com/p/sympy/issues/detail?id=1467
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Issue 2133: Merge new polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=2133
This issue is now blocking issue 1469.
See http://code.google.com/p/sympy/issues/detail?id=1469
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Comment #8 on issue 1469 by asmeurer: "can't decompose" error
http://code.google.com/p/sympy/issues/detail?id=1469
I think Mateusz has added enough tests for symbolic factorization, at least
in polys12.
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Comment #14 on issue 1473 by asmeurer: __mod__ does not work on reals
http://code.google.com/p/sympy/issues/detail?id=1473
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Comment #2 on issue 2026 by asmeurer: Exact substitution
http://code.google.com/p/sympy/issues/detail?id=2026
This is the biggest thing blocking 2010 (aside from me still needing to
finish the algorithm), so I am putting a milestone on it.
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Comment #8 on issue 1520 by asmeurer: Inconsistency in subs
http://code.google.com/p/sympy/issues/detail?id=1520
See also issue 2027.
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Comment #3 on issue 2026 by asmeurer: Exact substitution
http://code.google.com/p/sympy/issues/detail?id=2026
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Comment #6 on issue 1587 by asmeurer: Polynomials docs
http://code.google.com/p/sympy/issues/detail?id=1587
Mateusz, what is the state of this? The poly docs need to be updated
before the release.
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Comment #12 on issue 1599 by asmeurer: match docstring
http://code.google.com/p/sympy/issues/detail?id=1599
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Status: Fixed
Comment #6 on issue 1628 by asmeurer: residue() function implemented
http://code.google.com/p/sympy/issues/detail?id=1628
I think this was https://github.com/sympy/sympy/pull/15, which was pushed
in.
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Status: Duplicate
Mergedinto: 1154
Comment #6 on issue 1642 by asmeurer: decorators in
functions/special/polynomials.py prevent printing in Mul.flatten (and
others)
http://code.google.com/p/sympy/issues/detail?id=1642
This was actually a duplicate of issue 1154.
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Comment #3 on issue 1154 by asmeurer: Don't do any calculation at import
time
http://code.google.com/p/sympy/issues/detail?id=1154
Issue 1642 has been merged into this issue.
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Comment #8 on issue 1422 by asmeurer: spherical bessel functions
http://code.google.com/p/sympy/issues/detail?id=1422
I am referring to https://github.com/sympy/sympy/pull/16.
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Comment #13 on issue 1704 by asmeurer: [PATCH] Integration of certain
composite functions fails
http://code.google.com/p/sympy/issues/detail?id=1704
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Milestone-Release0.7.1
Comment #6 on issue 1727 by asmeurer: fix namespace clashes
http://code.google.com/p/sympy/issues/detail?id=1727
-1 for replacing sum() with Sum.doit() (because then it looks to the user
like Sum
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Comment #5 on issue 1747 by asmeurer: nseries test failure with bin/test
--random
http://code.google.com/p/sympy/issues/detail?id=1747
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Comment #4 on issue 1756 by asmeurer: Division by order terms is invalid
http://code.google.com/p/sympy/issues/detail?id=1756
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Comment #45 on issue 1757 by asmeurer: coding style
http://code.google.com/p/sympy/issues/detail?id=1757
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Status: Fixed
Labels: Documentation Polynomial
Comment #2 on issue 1885 by asmeurer: failure in documentation
http://code.google.com/p/sympy/issues/detail?id=1885
This was already fixed with
commit 1a8d37734cf8dd458ab623dd0879eb86d5689915
Author: Christian Muise
Date:
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Comment #1 on issue 1886 by asmeurer: Documentation for Expr
http://code.google.com/p/sympy/issues/detail?id=1886
Postponing (unless you want to write a patch soon). I think Ronan should
write it, as he best understands t
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Summary: Separate boolean and symbolic relationals
Labels: -Milestone-Release0.7.0 Milestone-Release0.7.1
Comment #3 on issue 1887 by asmeurer: Separate boolean and symbolic
relationals
http://code.google.com/p/sympy/issues/detail?id=1887
I think this is the best plac
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Comment #4 on issue 1890 by asmeurer: Quartic equation solution probably
not correct
http://code.google.com/p/sympy/issues/detail?id=1890
So postponing.
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Comment #7 on issue 1892 by asmeurer: integrate(1/(x*(a+b*x)**3), x) fails
http://code.google.com/p/sympy/issues/detail?id=1892
So we really need to be implementing apart in integrate (issue 1280) to
completely fix this.
Anyway, the test is in my branch, so let's leave the issue open, but it
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Comment #7 on issue 1894 by asmeurer: Automatic rewriting of boolean
functions
http://code.google.com/p/sympy/issues/detail?id=1894
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Comment #8 on issue 1797 by ellisonbg: fix isympy for upcoming ipython 0.11
http://code.google.com/p/sympy/issues/detail?id=1797
I have been doing some work on IPython recently that will make this issue
much easier to resolve. Once the relevant work is done on IPython, I will
update sympy a
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Comment #15 on issue 1903 by asmeurer: Unify Assume keys, ask keys and ask
handlers
http://code.google.com/p/sympy/issues/detail?id=1903
So what is the state of this? Is what remains still priority?
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Comment #7 on issue 1927 by asmeurer: Basic.__call__ is confusing and
inconsistent
http://code.google.com/p/sympy/issues/detail?id=1927
We should fix this before the release. Should we add a deprecation warning
or just remove it?
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Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Milestone-Release0.7.1
New issue 2142 by asmeurer: Turn on deprecation warnings in isympy
http://code.google.com/p/sympy/issues/detail?id=2142
Python 2.7 ignores DeprecationWarning by default (see
http://docs.python.org/libra
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Labels: NeedsReview asmeurer
Comment #8 on issue 1927 by asmeurer: Basic.__call__ is confusing and
inconsistent
http://code.google.com/p/sympy/issues/detail?id=1927
So I went ahead and made a pull request for both of these. Pick which one
you think is better.
Note that P
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Status: Fixed
Labels: -NeedsReview
Comment #4 on issue 1820 by smichr: Rational(Rational(1,2),Rational(1,3))
should not be nan
http://code.google.com/p/sympy/issues/detail?id=1820
This has been fixed with 1778, I believe.
Rational(Rational(1,2),Rational(1,3))
3/2
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Issue 1778: Rational from string can be improved
http://code.google.com/p/sympy/issues/detail?id=1778
This issue is no longer blocking issue 1914.
See http://code.google.com/p/sympy/issues/detail?id=1914
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Status: WontFix
Blockedon: -1778
Comment #9 on issue 1914 by smichr: add dictionary support to sympify
http://code.google.com/p/sympy/issues/detail?id=1914
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Comment #21 on issue 1374 by smichr: simplify(x**2-x**2.0) does not yield 0.
http://code.google.com/p/sympy/issues/detail?id=1374
Regarding comment 19: if simplify would include nsimplify(expr,
rational=True) this problem would be solved for cases of simplification:
h[1] >>> x**2-x**2.0
x**2
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Labels: Documentation NeedsReview asmeurer
Comment #3 on issue 1959 by asmeurer: update docs about github
http://code.google.com/p/sympy/issues/detail?id=1959
I did this, albeit minimally (I only replaced instances of git.sympy.org
with github in the docs). I also replaced it
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Status: Fixed
Labels: -NeedsReview -smichr
Comment #46 on issue 1778 by smichr: Rational from string can be improved
http://code.google.com/p/sympy/issues/detail?id=1778
1374's comment 19 suggested that the solution to 1374's problem would be to
do an rsimplify; there
Comment #4 on issue 2026 by smichr: Exact substitution
http://code.google.com/p/sympy/issues/detail?id=2026
I've got the atomic subs (of Sebastian's) and exact substitution in my work
in t2. You've already reviewed it once. Do you want to aim for 0.7 instead?
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Comment #5 on issue 2026 by asmeurer: Exact substitution
http://code.google.com/p/sympy/issues/detail?id=2026
Not really :)
I've got a lot of stuff to do for the release, but if you want anything to
go in, just request it (or get someone to review it and push it in). I
myself can wait unti
Updates:
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Comment #3 on issue 1969 by asmeurer: Matrix.LUdecompositionFF() fails for
some inputs
http://code.google.com/p/sympy/issues/detail?id=1969
This looks good.
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Comment #11 on issue 2015 by asmeurer: Hangs attempting to solve a system
of linear equations
http://code.google.com/p/sympy/issues/detail?id=2015
Mateusz, you marked this as Milestone-Release0.7.0. Did you plan on doing
anything with this?
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Labels: -Milestone-Release0.7.0 Milestone-Release0.7.1
Comment #2 on issue 2029 by asmeurer: Poly simplification functions need a
deep option
http://code.google.com/p/sympy/issues/detail?id=2029
I'm guessing this won't happen before the release.
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Comment #11 on issue 2059 by asmeurer: Indexed should not wrap indices in
Idx
http://code.google.com/p/sympy/issues/detail?id=2059
Øyvind, should this be postponed, or will it get in before the release (or
is it already in)?
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Comment #5 on issue 2135 by asmeurer: Drop support for Python 2.4
http://code.google.com/p/sympy/issues/detail?id=2135
(No comment was entered for this change.)
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Labels: -Milestone-Release0.7.0 Milestone-Release0.7.1
Comment #9 on issue 1362 by asmeurer: Expand support for printing
derivatives
http://code.google.com/p/sympy/issues/detail?id=1362
(No comment was entered for this change.)
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Comment #5 on issue 1945 by asmeurer: Fix as_numer_denom() docstring and
add Expr to the Sphinx docs
http://code.google.com/p/sympy/issues/detail?id=1945
See the pull request.
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Comment #2 on issue 2137 by asmeurer: as_real_imag is broken for cos(1+I)**3
http://code.google.com/p/sympy/issues/detail?id=2137
See the pull request.
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Labels: -NeedsReview PassedReview Milestone-Release0.7.0
Comment #2 on issue 2121 by asmeurer: Add t to the list of default symbols
in isympy
http://code.google.com/p/sympy/issues/detail?id=2121
See the pull request.
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Comment #12 on issue 2015 by smichr: Hangs attempting to solve a system of
linear equations
http://code.google.com/p/sympy/issues/detail?id=2015
I don't think this is polys related. Commit b999dd3b6f03c190fdba4
(1809, 1716: extraction changes) makes the modified system solve very
quickly. T
Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium
New issue 2143 by asmeurer: Test runner does not print names of XPASSed
tests (usually)
http://code.google.com/p/sympy/issues/detail?id=2143
I was testing Vinzent's branch from https://github.com/sympy/sympy/pull/37,
which
Updates:
Labels: Testing
Comment by asmeurer:
(No comment was entered for this change.)
Affected issues:
issue 2129: -k option for tester should accept more than one keyword
http://code.google.com/p/sympy/issues/detail?id=2129
issue 2143: Test runner does not print names of XPAS
Updates:
Labels: Testing
Comment by asmeurer:
(No comment was entered for this change.)
Affected issues:
issue 1142: sympy.test() improve error reporting
http://code.google.com/p/sympy/issues/detail?id=1142
issue 1143: sympy.test(), improve collecting tests
http://code.googl
Updates:
Labels: Testing
Comment by asmeurer:
(No comment was entered for this change.)
Affected issues:
issue 635: implement robust sandboxed testing either in py.test or
nosetests
http://code.google.com/p/sympy/issues/detail?id=635
issue 648: py.test isn't picking up 5 fact
Updates:
Labels: Assumptions
Comment #3 on issue 211 by asmeurer: sympy-merge: test_assumptions.py
failing test cases
http://code.google.com/p/sympy/issues/detail?id=211
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Labels: Testing
Comment #1 on issue 434 by asmeurer: py.test bisection algorithm
http://code.google.com/p/sympy/issues/detail?id=434
(No comment was entered for this change.)
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