提示语法错误！但自己找不出。

all = 'pai.txt'

with open(all) as file_object: 
  number = file_object.readlines()

num = ''
for i in number: 
    num += i.rstrip()
  
birthday = input(print('Please enter the birthday: ')   
if birthday in num: 
  print('Your birthday: ' + birthday + 
        'is in the pai. ')
else: 
  print('Your birthday: ' + birthday + 
        'is not in the pai. ')

提示：
if birthday in num:
^
SyntaxError: invalid syntax

birthday = input(print('Please enter the birthday: ')
这后面少个括号 改成
birthday = input(print('Please enter the birthday: '))

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所以你的代码里没有if birthday in num:吗？