Human: Can you show me a Python function to boolean condition for numpy matrix. Assistant: 
Here is a Python function to boolean condition for numpy matrix

import numpy as np

def is_numpy_matrix(x):
    """Returns True if x is a numpy matrix, False otherwise."""
    return isinstance(x, np.ndarray)

# Enter the numpy matrix
matrix = np.array([[1, 2], [3, 4]])

# Calling the function
print((is_numpy_matrix(matrix)))

#Example Output
# True

#Remember to inspect code for bugs.