What is the difference between default parameters and positional parameters in Python? Also give an example of a function header which uses both.

●​ Default parameters have default values whereas positional parameters are assigned values to them based on their position in the function call. ●​ In a function header, default parameters are always written after positional parameters(if any). Example :

def Q22(X, Y=10):    # Here Y is default & X is positional parameter