Is there a python module to solve linear equations?

Question

I want to solve a linear equation with three or more variables. Is there a good library in python to do it?

Answer 1

Yes, the very-popular NumPy package has a function to do this. Their example:

Solve the system of equations 3 * x0 + x1 = 9 and x0 + 2 * x1 = 8:

>>> import numpy as np >>> a = np.array([[3,1], [1,2]]) >>> b = np.array([9,8]) >>> x = np.linalg.solve(a, b) >>> x array([ 2.,  3.])  

https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.linalg.solve.html

Answer 2

See http://sympy.org/ and http://numpy.scipy.org/.

Specifically, http://docs.scipy.org/doc/numpy/reference/routines.linalg.html

And http://docs.sympy.org/0.7.0/tutorial.html#algebra, http://docs.sympy.org/dev/modules/solvers/solvers.html

Edit: Added solvers link from the comment.