我在这段python代码中找不到我做错了什么

当我尝试运行这段代码时：

capitals = ["Lisbon", "Madrid", "Paris", "Berlin", "London", 
"Reykjavik", "Dublin", "Stockolm", "Rome"]
client_name = "Me"
while True:
answer = input(client_name + ": ")
if answer == "What is the capital of Germany?"
print(capitals[3])
else:
print("I don't understand!")

它给了我这个错误：

File "chatbot.py", line 4
answer = input(client_name + ": ")
     ^

---

但我不明白我做错了什么，有人能帮我吗？

缩进和缺失：在if的末尾：

capitals = ["Lisbon", "Madrid", "Paris", "Berlin", "London", 
"Reykjavik", "Dublin", "Stockolm", "Rome"]
client_name = "Me"
while True:
    answer = input(client_name + ": ")
    if answer == "What is the capital of Germany?":
        print(capitals[3])
    else:  
        print("I don't understand!")

将代码更改为：

capitals = ["Lisbon", "Madrid", "Paris", "Berlin", "London", 
            "Reykjavik", "Dublin", "Stockolm", "Rome"]
client_name = "Me"
while True:
    answer = input(client_name + ": ")
    if answer == "What is the capital of Germany?":
        print(capitals[3])
    else:
        print("I don't understand!")

---

python中的缩进是代码的一部分，您缺少了：在if语句之后

if missing冒号和answer missing indentation我应该把冒号放在哪里？是的，我刚刚意识到了这一点！呸！谢谢你的帮助。