time.sleep（）函數顯然是導致語法無效的原因

Question

這是爲Python中的票據供應商提供的程序。 直到我在time.sleep函數中添加它才工作正常。 這裏是我的代碼：

import time 
    spaces = 61 
    def init(): 
     global spaces 
     if spaces > 1: 
      print("Welcome to OCR's car park!") 
      print("The number of spaces remaining is "+ str(spaces-1) +".") 
      print("What are the last three letters on your number plate?") 
      numplate = input() 
      if len(numplate) != 3: 
       print("These letters are invalid.") 
       time.sleep(1) 
       init() 
      elif numplate.isalpha(): 
       print("It's £3.45 for a ticket. Enter how much money you want to insert. Type 'cancel' to cancel.") 
     confirm = input() 
     if confirm == "cancel": 
      print("Payment cancelled.") 
      time.sleep(3) 
      init() 
     if int(confirm) < 345: 
      print("You don't have enough money.") 
      time.sleep(1) 
      init() 
      print("£" +str(confirm)+ " inserted.") 
      time.sleep(2) 
     if float(confirm)> 345: 
      print("Taking change...") 
      time.sleep(3) 
      confirm = float(confirm)-345 
      print("Change due: £" +str(len(confirm[0]))+ "." +str(len(confirm[1]))+str(len(confirm[2]))  
     time.sleep(1) 
     print("Printing ticket. Please wait.") 
     time.sleep(5) 
     print("Thank you for choosing OCR's car park!") 
     spaces -= 1 
     print("") 
     print("") 
     print("|-----|") 
     print("| "+str(numplate.upper())+"|") 
     print("|-----|") 
     print("") 
     print("") 
     init() 
    else: 
     print("These letters are invalid.") 
     time.sleep(1) 
     init() 
elif spaces < 2: 
    print("No More Spaces.") 
    init() 

我每次運行它，它會顯示一個彈出說'invalid syntax'，它始終指向time.sleep(1)功能。

Answer 1

錯誤出現在您的以下行中。

print("Change due:£"str(len(confirm[0]))+"."+str(len(confirm[1]))+str(len(confirm[2])) 

有一個右括號丟失。只需添加一個右括號即可。