Import matrix from text file using python

Question

I have two text files that have matrices written in them(not numpy matrices, so its a list of lists). These matrices are written in string format, so the text file looks like th

Answer 1

You could make use of the ast module:

import ast

strArray =  "[[1,2,3],[3,4,5],[6,7,8]]"

# evaluates the array in string format and converts it to a python array object
array = ast.literal_eval(strArray)

note: For multiple nested arrays like you have, literal_eval will most likely convert the string into a tuple with nested arrays as elements. Just keep that in mind as you use this module.