Human: return a colunm as a list in. Assistant: 
Here is a Python function to return a colunm as a list in Python

import numpy as np

def get_column(matrix, column):
    """Returns the column as a list."""
    return matrix[:, column]

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

# Calling the function
print((get_column(matrix, 1)))

#Example Output
# [2 5 8]

#Remember to inspect code for bugs.