python 运行显示invalid syntax 错误

请教大神，
对着教材输入的一段代码（猜数字游戏）
在CMD命令窗口执行，
为什么总是显示invalid syntax错误呢
非常感谢

import random
number=random.randint(1,100)
guess=0
while True:
  num_input=input('please input a number between 1 and 100')
  guess+=1
  if not num_input.isdigit():
   print('please input a number')
  elif int(num_input)<0 or int(num_input)>=100:
   print('the number you input must be in 1 and 100')
  else:
   if number==int(num_input):
    print(f'congrats, you got it, you guessed {guess} times')
   break
  elif number>int(num_input):
   print('you input a smaller data')
  elif number<int(num_input):
   print('you input a bigger data')
  else:
   print('system has a unpredictable problem, please contact the service staff for dealing')