Making a hollow box in Python to these specifications?

Question

I\'m to \"Write a python program that prompts the user to input a positive integer n. The program then prints a hollow rectangle with n rows and 2*n columns. For a example an in

Answer 1

Code:

def printStars(length):
    l = ['*'*length]
    l+= ['*' + ' '*(length-2) + '*'] * (length-2)
    l+= ['*'*length]

    return l

if __name__=='__main__':
    print('\n'.join(printStars(15)))

Output:

***************
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*             *
*             *
***************

Hope this helps :)

EDIT:Fixed Some Formatting