運行我的代碼時出錯（語法無效）

Question

import time 
def pini(): 
    pin1 = int(input("enter your pin please: ") 
    if pin1 == pin: 
      print("pin correct") 
      print("paying: £",amount) 
      print("opening connection...") 
      time.sleep(0.4) 
      print("contacting bank...") 
      time.sleep(1.0) 
      print("contacting bank...") 
      time.sleep(0.5) 
      print("contacting bank...") 
      time.sleep(0.2) 
      print("contacting bank...") 
      time.sleep(0.2) 
      print("transaction successful") 
    elif: 
      print("wrong pin, try again") 
      pini() 

print("Welcome to the bank") 
print("\n") 
pin = int(input("what is your pin: ") 

pay = "" 
while pay == "": 
    pay = input("press 'n' to make a payement: ").lower() 
    if pay == "n": 
      amount = int(input("please enter amount to pay: ") 
      print("please insert your card to pay" , "£",amount) 
      print("\n") 
      pini() 

這是我的代碼。

運行時，出現「無效語法」錯誤，我正在使用Python/IDLE 3.4.2。 這只是一個學校項目的一個小程序，我遇到了一個錯誤。

我認爲可以縮進這是問題，但否則我不知道，任何幫助讚賞:)

Answer 1

要繼續什麼吉姆說，你的代碼應該閱讀

def pini(): 
    pin1 = int(input("enter your pin please: ")) 

你可能想要考慮使用IDE - https://en.wikipedia.org/wiki/Integrated_development_environment - 因爲這些可以突出像這樣的簡單錯誤（例如，Eclipse是我的選擇）。問什麼是最好的 - What IDE to use for Python?

Answer 2

我在你的代碼中放了一些註釋，如下所示。

#!/usr/bin/env python 
# -*- coding: utf-8 -*- 

import time 
def pini(): 
    pin1 = int(input("enter your pin please: ")) # miss a right bracket ')' 
    if pin1 == pin:         # Be attention to your code indentation 
     print("pin correct") 
     print("paying: £",amount) 
     print("opening connection...") 
     time.sleep(0.4) 
     print("contacting bank...") 
     time.sleep(1.0) 
     print("contacting bank...") 
     time.sleep(0.5) 
     print("contacting bank...") 
     time.sleep(0.2) 
     print("contacting bank...") 
     time.sleep(0.2) 
     print("transaction successful") 
    else:  # it should be `else` instead of `elif` 
     print("wrong pin, try again") 
     pini() 

print("Welcome to the bank") 
print("\n") 
pin = int(input("what is your pin: ")) # Again, you miss the right bracket `)` 

pay = "" 

while pay == "": 
    pay = input("press 'n' to make a payement: ").lower() 
    if pay == "n": 
     amount = int(input("please enter amount to pay: ")) # Same problem `)` 
     print("please insert your card to pay" , "£",amount) 
     print("\n") 
     pini()