Comment #3 on issue 1267 by ondrej.certik: improve our str printer:
1/cos(x)*sin(x) -> sin(x)/cos(x)
http://code.google.com/p/sympy/issues/detail?id=1267
Thanks for the patch!
The tests need to be changed as well:
$ bin/test sympy/printing/
============================= test process starts
==============================
executable: /usr/bin/python (2.5.2-final-0)
sympy/printing/pretty/tests/test_pretty.py[16] ................
[OK]
sympy/printing/pretty/tests/test_pretty_unicode.py[18] ..................
[OK]
sympy/printing/tests/test_ccode.py[4] .F..
[FAIL]
sympy/printing/tests/test_gtk.py[1] X
[OK]
sympy/printing/tests/test_lambdarepr.py[2] ..
[OK]
sympy/printing/tests/test_latex.py[14] ..........f...
[OK]
sympy/printing/tests/test_mathml.py[7] .......
[OK]
sympy/printing/tests/test_precedence.py[11] ...........
[OK]
sympy/printing/tests/test_python.py[6] ......
[OK]
sympy/printing/tests/test_repr.py[19] ...................
[OK]
sympy/printing/tests/test_str.py[54] ..F..F..............F......................
...........
[FAIL]
________________________________ xpassed tests
_________________________________
sympy/printing/tests/test_gtk.py:'XPASS: test_1'
________________________________________________________________________________
______________ sympy/printing/tests/test_ccode.py:test_ccode_Pow
_______________
File "/home/ondra/repos/sympy/sympy/printing/tests/test_ccode.py", line
19, in
test_ccode_Pow
"1/(y + pow(x,2))*pow((3.50000000000000*g(x)),(-x + pow(y,x)))"
AssertionError
________________________________________________________________________________
__________________ sympy/printing/tests/test_str.py:test_Add
___________________
File "/home/ondra/repos/sympy/sympy/printing/tests/test_str.py", line 39,
in test_Add
assert str(1+x+x**2/2+x**3/3) == "1 + x + 1/2*x**2 + 1/3*x**3"
AssertionError
________________________________________________________________________________
_______________ sympy/printing/tests/test_str.py:test_Derivative
_______________
File "/home/ondra/repos/sympy/sympy/printing/tests/test_str.py", line 58,
in
test_Derivative
assert str(Derivative(x**2/y, x, y, evaluate=False)) == "D(1/y*x**2, x,
y)"
AssertionError
________________________________________________________________________________
_________________ sympy/printing/tests/test_str.py:test_Limit
__________________
File "/home/ondra/repos/sympy/sympy/printing/tests/test_str.py", line
122, in
test_Limit
assert str(Limit(sin(x)/x, x, y)) == "Limit(1/x*sin(x), x, y)"
AssertionError
== tests finished: 146 passed, 4 failed, 1 xfailed, 1 xpassed in 0.57
seconds ==
DO *NOT* COMMIT!
Then we can commit it.
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