028_boxPrint.py

def boxPrint(symbol, width, height):
    if len(symbol) != 1:
        raise Exception('Symbol must be aa single character string.')
    if width <= 2:
        raise Exception('Width must be greater than 2.')
    if height <= 2:
        raise Exception('Height must be greater than 2.')
    print(symbol * width)
    for i in range(height - 2):
        print(symbol + (' ' * (width - 2)) + symbol)
    print(symbol * width)

for sym, w, h in (('*', 4, 4), ('O', 20, 5), ('x', 1, 3), ('ZZ', 3, 3)):
    try:
        boxPrint(sym, w, h)
    except Exception as err:
        print('An exception happened: ' + str(err))

# Running result:
# ****
# *  *
# *  *
# ****
# OOOOOOOOOOOOOOOOOOOO
# O                  O
# O                  O
# O                  O
# OOOOOOOOOOOOOOOOOOOO
# An exception happened: Width must be greater than 2.
# An exception happened: Symbol must be aa single character string.