One last thing, please:
I have been tying the integration issue with the development issue:
If I put in the following, one command at a time, it works fine:
from sympy import *
from sympy.abc import t
shape = 4.0
scale = 2.0
z1 = (scale**shape)*gamma(shape)
x = symbols('x')
y = exp(-x/scale)*(x**(shape-1))/z1
u = integrate(y,(x,0,t))
print u
However, if I put those commands in a file and run these, this is what I
get:
[email protected] [~/public_html/cgi-bin]# python tapas.py
Traceback (most recent call last):
File "tapas.py", line 10, in <module>
u = integrate(y,(x,0,t))
File
"/usr/local/lib/python2.7/site-packages/sympy/utilities/decorator.py", line
35, in threaded_func
return func(expr, *args, **kwargs)
File
"/usr/local/lib/python2.7/site-packages/sympy/integrals/integrals.py", line
1283, in integrate
risch=risch, manual=manual)
File
"/usr/local/lib/python2.7/site-packages/sympy/integrals/integrals.py", line
555, in doit
conds=conds)
File
"/usr/local/lib/python2.7/site-packages/sympy/integrals/integrals.py", line
919, in _eval_integral
h = heurisch_wrapper(g, x, hints=[])
File
"/usr/local/lib/python2.7/site-packages/sympy/integrals/heurisch.py", line
128, in heurisch_wrapper
unnecessary_permutations)
File
"/usr/local/lib/python2.7/site-packages/sympy/integrals/heurisch.py", line
566, in heurisch
solution = _integrate('Q')
File
"/usr/local/lib/python2.7/site-packages/sympy/integrals/heurisch.py", line
555, in _integrate
numer = ring.from_expr(raw_numer)
File "/usr/local/lib/python2.7/site-packages/sympy/polys/rings.py", line
367, in from_expr
raise ValueError("expected an expression convertible to a polynomial in
%s, got %s" % (self, expr))
ValueError: expected an expression convertible to a polynomial in
Polynomial ring in _x0, _x1, _x2, _x3 over
RR[_A0,_A1,_A2,_A3,_A4,_A5,_A6,_A7,_A8,_A9,_A10,_A11,_A12,_A13,_A14,_A15,_A16,_A17,_A18,_A19,_A20,_A21,_A22,_A23,_A24,_A25,_A26,_A27,_A28,_A29,_A30,_A31,_A32,_A33,_A34]
with lex order, got -_A0*_x1**2 - _A12*_x2**2 - _A18 - _A2*_x0**2 -
2*_A20*_x0*_x3 - 2*_A22*_x2*_x3 - _A23*_x2 - _A24*_x0*_x2 - _A25*_x0 -
3*_A3*_x3**2 - _A34*_x1*_x2 - _A5*_x0*_x1 - 2*_A6*_x3 - 2*_A7*_x1*_x3 -
_A8*_x1 + _x0*_x1 + 0.5*_x1*(2*_A0*_x1*_x3 + _A1*_x2 + 2*_A13*_x1 +
2*_A19*_x0*_x1 + _A21*_x2**2 + _A26 + 2*_A29*_x1*_x2 + 3*_A30*_x1**2 +
_A32*_x0**2 + _A33*_x0 + _A34*_x2*_x3 + _A5*_x0*_x3 + _A7*_x3**2 + _A8*_x3
+ _A9*_x0*_x2) - 3.0*_x2*(_A11 + 2*_A15*_x0*_x2 + _A16*_x2 + _A17*_x2**2 +
_A19*_x1**2 + 2*_A2*_x0*_x3 + _A20*_x3**2 + _A24*_x2*_x3 + _A25*_x3 +
2*_A31*_x0 + 2*_A32*_x0*_x1 + _A33*_x1 + 3*_A4*_x0**2 + _A5*_x1*_x3 +
_A9*_x1*_x2) - 2.0*_x3**1.0*(_A1*_x1 + 2*_A12*_x2*_x3 + 3*_A14*_x2**2 +
_A15*_x0**2 + _A16*_x0 + 2*_A17*_x0*_x2 + 2*_A21*_x1*_x2 + _A22*_x3**2 +
_A23*_x3 + _A24*_x0*_x3 + _A27 + 2*_A28*_x2 + _A29*_x1**2 + _A34*_x1*_x3 +
_A9*_x0*_x1)
[email protected] [~/public_html/cgi-bin]#
Weird.
Is there a way to make sure that the correct version of sympy is set in the
file, please?
Thanks again,
Erin
On Monday, November 11, 2013 8:58:17 PM UTC-6, Aaron Meurer wrote:
>
> import sympy
> sympy.__version__
>
> Aaron Meurer
>
> On Nov 11, 2013, at 6:54 PM, Erin Hodgess <[email protected]<javascript:>>
> wrote:
>
> Hello again
>
> I used the "git" to install the development version of sympy. Now the
> dumb question: how do I make sure that I'm using the development version
> and not the old version, please?
>
> Thanks,
> Erin
>
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