human
What is a good Python function to is there any to check for nan valuation.
assistant
Here is a Python function to check for nan valuators

import numpy as np

def is_nan(value):
    """
    Checks if the value is nan.
    """
    return value!= value

# Enter the data
x = np.array([1, 2, 3, 4, 5])

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

#Example Output
# [False False False False False]

#Remember to inspect code for bugs.