输入表白的语句，默认I Love you

love = input('Please enter a sentence of love, otherwise the default is "I Love you": ') #

输入署名或者赠谁，没有不执行

me = input('Please enter pen name, otherwise the default do not execute: ')
if love == '':
love = 'I Love you'

love = input('Please enter a sentence of love, otherwise the default is "I Love you": ') #

if love is '': love = "I Love You"

me = input('Please enter pen name, otherwise the default do not execute: ')

if me is "":pass

else:
    print(love,me)