python - 结果重复

Question

大家好，所以我是新手，请在 python 中尝试循环，我不断重复我的结果，这是为什么？

cleanHello = 'you asked about clean hello'
greetings = 'hi'

def main():
    while True:
        try:
            userInput = input('user: ')
            for x in userInput:
                if x in greetings:  
                    print(cleanHello)
        except(KeyboardInterrupt, EOFError, SystemExit):
            break

main()    

标签： pythonloops

Answer 1

for x in userInput:
    if x in greetings:
        ...

您正在遍历输入中的每个字符并检查该单个字符是否在问候语或“hi”中。

您可能正在尝试这样做：

cleanHello = 'you asked about clean hello' 
greetings = 'hi' 

def main(): 
    while True:
        try: 
            userInput = input('user: ') 
            if greetings in userInput:
                print(cleanHello)
        except(KeyboardInterrupt, EOFError, SystemExit): 
            break 

main() 

如果你输入“say hi”，它会检查你输入的文本中是否有“hi”，然后打印 cleanHello。