python-numpyHow to save Numpy matrix to CSV file

Usage example

import numpy as np

matrix = np.array([[1,2], [3,4], [5,6]])
np.savetxt('/tmp/db.csv', matrix, delimiter=',')

with open('/tmp/db.csv', 'r') as f:
  print(f.read())

output

1.000000000000000000e+00,2.000000000000000000e+00
3.000000000000000000e+00,4.000000000000000000e+00
5.000000000000000000e+00,6.000000000000000000e+00