Question

显然，我的字符串识别算法无法正常工作。它根据用户的输入返回错误的响应。我知道它可能很简单，但我现在无法看到它是什么。我完成了研究，但我还没有找到另一个python问题，当输入用户输入时，返回错误的响应。我的if语句是否正确形成？字符串搜索有问题吗？

import random

def po_response():
response = {1 : 'This is random response A from po_response()',
            2 : 'This is random response B from po_response()',
            3 : 'This is randomw response C from po_response()'}
answer = random.sample(response.items(),1)
print(answer)
main()


def greetings_response():
response = {1 : 'This is response A from greetings_response()',
            2 : 'This is response B from greetings_response()',
            3 : 'This is response C from greetings_response()'}
answer = random.sample(response.items(),1)
print(answer)
return response
main()


def main():
userRequest = input('Welcome, Please enter your request. \n')
userReq = userRequest.lower()
if 'how are you' or 'how\'s it going' in userReq:
    print('first if')
    print('The value of the input is ')
    print(userReq)
    greetings_response()


elif 'ship' + 'po' or 'purchase order' in userReq:
    print('elif')
    print('The value of the input is ')
    print(userReq)
    po_response()


else:
    print('Please re-enter your request')

main()

以下是我输入po＆＃39;

时的回复

   Welcome, Please enter your request. 
   >>>ship po
   first if
   The value of the input is 
   ship po
   [(2, 'This is response B from greetings_response()')]

它不应该转到greetings_response（）函数，它应该转到po_response（）函数。不知道为什么它会以这种方式行事。

Answer 1

使用or进行测试似乎有误。也许你的意思是if ('how are you' in userReq) or ('how\'s it goind' in userReq)？看看Python运营商的优先级。

为什么我的字符串识别算法没有检测到正确的字符串？

1 个答案: