human
cast numpy array to bool.
assistant
Here is a Python function to cast numpy arrays to bools

import numpy as np

def cast_numpy_array_to_bool(array):
    """Cast numpy array to bool."""
    return array.astype(bool)

# Enter the numpy array
array = np.array([[1,2,3],[4,5,6],[7,8,9]])

# Calling the function
print((cast_numpy_array_to_bool(array)))

#Example Output

# [[ True  True  True]
#  [ True  True  True]
#  [ True  True  True]]

#Remember to inspect code for bugs.