系数应为整数：syydiophantine方程-CoefficientsshouldbeIntegers:sympydiophantineequations

I have a polynomial (generated from the characteristic polynomial of a matrix) and I'd like to solve for the integer solutions

我有一个多项式（从矩阵的特征多项式生成），我想解决整数解

import sympy
from sympy.solvers.diophantine import diop_linear

M = sympy.Matrix([[0,1,1],[1,0,1],[1,1,0]])
p = M.charpoly()

This polynomial clearly factors into integer roots:

这个多项式明显地考虑到整数根：

print p.factor()
# (_lambda - 2)*(_lambda + 1)**2

The input polynomial however, is expected to be an integer coefficient type when using diop_linear(p). I'm not sure how to do this using sympy 0.75, despite looking through the docs. The traceback is:

然而，当使用diop_linear（p）时，期望输入多项式是整数系数类型。尽管查看了文档，但我不确定如何使用sympy 0.75进行此操作。追溯是：

Traceback (most recent call last):
  File "test.py", line 8, in 
    diop_linear(p)
  File "/usr/local/lib/python2.7/dist-packages/sympy/solvers/diophantine.py", line 365, in diop_linear
    var, coeff, diop_type = classify_diop(eq)
  File "/usr/local/lib/python2.7/dist-packages/sympy/solvers/diophantine.py", line 232, in classify_diop
    raise TypeError("Coefficients should be Integers")
TypeError: Coefficients should be Integers

1 个解决方案