Python 聊天机器人“TypeError：‘NoneType’类型的参数不可迭代”[重复]

Question

我正在创建一个聊天机器人，当用户询问特定问题时，它应该简单地回复用户，机器人将检测到代码并以正确的输出进行回复。但我需要帮助解决类型错误。

我的代码：

user_name = input('''What would you like to be called: 
''')
bot_name = input('''
Now lets give you virtual bot a name: 
''')
print(' ')
print(f"{'Thank you'} {user_name} {'You have just summoned a new bot named'} {bot_name}!")

print('''

You may now have the permission to talk to the bot! HV

''')

import time
time.sleep(2)

import random
l = (bot_name + ":Hello!", bot_name + ":Hi!", bot_name + ":Hello!")
random_greeting = random.choice(l)
print(random_greeting)

def openinput(input):
    return print(input(f"{user_name}{':'}"))

if "how are you doing today" in openinput(input):
    print({bot_name} + 'Very Well! Thank you for asking :)')
elif "hi" in openinput(input):
    print('Hi!!')
else:
    print("ERROR1.0: It seem's like my index doesn't answer your question.")

错误：

Traceback (most recent call last):
  File "app.py", line 26, in <module>
    if "how are you doing today" in openinput(input):
TypeError: argument of type 'NoneType' is not iterable

Answer 1

该错误来自于您尝试在返回 print 语句的函数中进行迭代（使用

in

）。我将其交换为基于输入的变量归因，现在它可以工作了：

user_name = input('''What would you like to be called: 
''')
bot_name = input('''
Now lets give you virtual bot a name: 
''')
print(' ')
print(f"{'Thank you'} {user_name} {'You have just summoned a new bot named'} {bot_name}!")

print('''

You may now have the permission to talk to the bot! HV

''')

import time
time.sleep(2)

import random
l = (bot_name + ":Hello!", bot_name + ":Hi!", bot_name + ":Hello!")
random_greeting = random.choice(l)
print(random_greeting)

user_input = input(f"{user_name}{':'}")

if "how are you doing today" in user_input:
    print({bot_name} + 'Very Well! Thank you for asking :)')
elif "hi" in user_input:
    print('Hi!!')
else:
    print("ERROR1.0: It seem's like my index doesn't answer your question.")

由于这是一个聊天机器人，我很确定您还想在重写 user_input 时进行循环，以便可以计算新的语句。像这样的东西：

while True:
    user_input = input(f"{user_name}{':'}")

    if "how are you doing today" in user_input:
        print({bot_name} + 'Very Well! Thank you for asking :)')
    elif "hi" in user_input:
        print('Hi!!')
    elif "bye" in user_input:
        print('Bye!')
        break
    else:
        print("ERROR1.0: It seem's like my index doesn't answer your question.")