AttributeError: 'Or' object has no attribute 'as_independent'

Terry Reedy tjreedy at udel.edu
Thu Feb 13 13:31:17 CET 2014


On 2/13/2014 4:03 AM, wilsonmonde at gmail.com wrote:
> Traceback (most recent call last):
>    File "testcsv.py", line 17, in <module>
>      print(sy.solve([x^2+x+1-t, x^3+x^2-t], x))
>    File "C:\Python27\lib\site-packages\sympy\solvers\solvers.py", line 902, in so
> lve
>      solution = _solve_system(f, symbols, **flags)
>    File "C:\Python27\lib\site-packages\sympy\solvers\solvers.py", line 1434, in _
> solve_system
>      i, d = _invert(g, *symbols)
>    File "C:\Python27\lib\site-packages\sympy\solvers\solvers.py", line 2422, in _
> invert
>      indep, dep = lhs.as_independent(*symbols)
> AttributeError: 'Or' object has no attribute 'as_independent'

You should report this on the sympy list. It is mirrored on 
news.gmane.org as gmane,comp.python.sympy.

> Code:
>
> import csv as csv
> import os
> import numpy as np
> import sympy as sy
> #from sympy import solve, Poly, Eq, Function, exp
> from sympy import *
> from numpy import *
> from numpy.linalg import *
> from sympy.polys.polyfuncs import interpolate
> from sympy import Function, dsolve, Eq, Derivative, sin, cos
> from sympy.abc import x
>
> f = sy.Function('f')
> x = sy.Symbol("x")
> t = sy.Symbol("t")
>
> print(sy.solve([x^2+x+1-t, x^3+x^2-t], x))
> print(sy.solve((x^2+x+1-t, x^3+x^2-t), x))
>
>


-- 
Terry Jan Reedy




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