human
What is a good Python program to check if complex numbers are complex.
assistant
Here is a Python program to check if complex numbers are complex

import numpy as np

def is_complex(x):
    """
        Check if a number is complex
    :param x:
    :return:
    """
    return isinstance(x, complex)

# Enter the number
x = 1 + 1j

# Calling the function
print((is_complex(x)))

#Example Output
# True

#Remember to inspect code for bugs.