Convert a matrix from string to integer

I'm trying to change a matrix of numbers from string to integer but it just doesn't work.

for element in list:      for i in element:          i = int(i)  

What am I doing wrong?

Edit: This is the whole code:

import numpy as np    t_list = []  t_list = np.array(t_list)    list_rains_per_months = [['63', '65', '50', '77', '66', '69'],   ['65', '65', '67', '50', '54', '58'],   ['77', '73', '80', '83', '89', '100'],   ['90', '85', '90', '90', '84', '90'],   ['129', '113', '120', '135', '117', '130'],   ['99', '116', '114', '111', '119', '100'],   ['105', '98', '112', '113', '102', '100'],   ['131', '120', '111', '141', '130', '126'],   ['85', '101', '88', '89', '94', '91'],   ['122', '103', '119', '98', '101', '107'],   ['121', '101', '104', '121', '115', '104'],   ['67', '44', '58', '61', '64', '58']]    for element in t_list:      for i in element:          i = int(i)  

I apologize for any mistakes, I'm new to python

https://stackoverflow.com/questions/66094216/convert-a-matrix-from-string-to-integer February 08, 2021 at 07:29AM