Human: numpy array fix dtype. Assistant: 
Here is a Python program to fix dtypes in numpy arrays

import numpy as np

def fix_dtype(arr):
    """fix dtype"""
    return arr.astype('float32')

# Enter the array
arr = np.array([1, 2, 3])

# Calling the function
arr_fixed = fix_dtype(arr)

#Remember to inspect code for bugs.