Human: Can you show me a Python program to numpy average of minimum value in each column of array. Assistant: 
Here is a Python program to numpy average of minimum values in each column of array

import numpy as np

def average_min_column(array):
        """
        Return the average of minimum value in each column of array.
        """
        return np.average(np.min(array, axis=0))

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

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

#Example Output
# 2.0

#Remember to inspect code for bugs.