Python Computer Science Help!

(4) Write the method num_even_digits(n). This method takes an integer number n as a parameter and returns the number of even digits in the number. Even digits are 0, 2, 4, 6, 8. For example, with the following method call: num_even_digits(12345) would return 2, since there are 2 even digits in the number 12345.

def num_even_digits(n):

#Fill in the necessary code below