A sample Python function that squares a number.

SquareNumberFunction.py

# Sample function code to square a number
# Identical to the sqrt function in the math module
# Dr. Steven B. Combs, coding novice

def square(n):
    """Returns the square of a number."""
    squared = n**2
    print "%d squared is %d." % (n, squared)
    return squared
    
# Call the square function on line 9! Make sure to
# include the number 10 between the parentheses.

square (10)