how to join by stack multiple types in numpy arrays

[deanhystad]

numpy arrays have a data type. All elements in the array are that type. You cannot make a numpy array that has strings and integers.

That said, you can have a numpy array of structures.

import numpy as np
from numpy.lib import recfunctions

arr1 = np.array([1, 2, 3, 4, 5, 6, 7])
arr2 = np.array(["n", "b", "c", "y", "f", "j", "p"])

l = recfunctions.merge_arrays((arr1, arr2))
print(l)

Output:
[(1, 'n') (2, 'b') (3, 'c') (4, 'y') (5, 'f') (6, 'j') (7, 'p')]