簡單if語句無效的語法

Question

import time 
print ("Hello and welcome to my text adventure!") 
time.sleep(2) 
Name = input ("What is your name?") 
print ("Hello " + Name) 
time.sleep(2) 
print ("You must choose between joining the Guild or protecting the Girl.") 
time.sleep(3) 
G = input ("Which do you choose? Guild/Girl") 
if: G = "Guild" 
    print ("So you chose the Guild. Interesting.") 
else print ("So you chose the Girl. How chivalrous.") 
# If statements not working. 

我不明白這是不是工作，我試着移動冒號周圍有點看看它是否會工作，無濟於事...我是很新的這一點，這是我的A-Level的課程計算，所以我需要幫助...

Answer 1

應該已經

if G == "Guild": 
    ... 
else: 
    ...