Sigh: Yes...
Thanks!
Ray
On 04/13/2018 08:01 AM, Eric Gourgoulhon wrote:
Hi,
There is a typo in your code: it should be "from_meijerg" instead of
"from_meijer":
|
sage:fromsympy.holonomic.holonomic importfrom_meijerg
sage:from_meijerg?
Signature:from_meijerg(func,x0=0,evalf=False,initcond=True,domain=QQ)
Docstring:
Convertsa MeijerG-functionto Holonomic."func"isthe G-Function
and"x0"isthe point at which initial conditions are required.
>>>fromsympy.holonomic.holonomic importfrom_meijerg,DifferentialOperators
>>>fromsympy importsymbols,meijerg,S
>>>x =symbols('x')
>>>from_meijerg(meijerg(([],[]),([S(1)/2],[0]),x**2/4))
HolonomicFunction((1)+(1)*Dx**2,x,0,[0,1/sqrt(pi)])
Initdocstring:x.__init__(...)initializes x;see help(type(x))forsignature
File:~/sage/8.1/local/lib/python2.7/site-packages/sympy/holonomic/holonomic.py
Type:function
|
Best wishes,
Eric.
Le vendredi 13 avril 2018 00:06:17 UTC+2, Raymond Rogers a écrit :
The sympy documentation
http://docs.sympy.org/latest/modules/holonomic/convert.html
<http://docs.sympy.org/latest/modules/holonomic/convert.html>
has the function from_meiljer and I do
from sympy import *
from sympy.holonomic.holonomic import from_hyper, from_meijer,
DifferentialOperators
(I think redundant)
I get: "ImportError: cannot import name from_meijer"
Is this a versioning error or what?
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