def print_twice(bruce):
print(bruce)
print(bruce)
def cat_twice(part1, part2):
cat = part1 + part2
print_twice(cat)
line1 = 'Bing tiddle '
line2 = 'tiddle bang.'
cat_twice(line1, line2)
#打印结果:
#Bing tiddle tiddle bang.
#Bing tiddle tiddle bang.