字符串必须包含多个单词

Question

I'm new to Python and I have a question.

I am making a simple chatbot and I want it to give answers to questions and things like that.

Here is an example:

def ChatMode():
    ChatCommand = raw_input ("- user: ")
    if "quit" in ChatCommand :
        print "Lucy: See you later."
        print ""
        UserCommand()
    else :
        print "Lucy: sorry i don\'t know what you mean."
        ChatMode()

For something more advanced I need it to check for 2 strings.

I tried some things like:

  def ChatMode() :
      ChatCommand = raw_input ("- user: ")
      if "quit" + "now" in ChatCommand :
          print "Lucy: See you later."
          print ""
          UserCommand()
      else :
          print "Lucy: sorry i don\'t know what you mean."
          ChatMode()

But that made "quitnow" .

I also tried to replace the + with an & but that gave me an error:

TypeError: unsupported operand type(s) for &: 'str' and 'str'

Does anyone have a short code to do this? I don't want 5+ sentences, I want to keep it as short as possible.

Answer 1

Use separate clauses to check if both "quit" and "now" are in the ChatCommand eg

if "quit" in ChatCommand and "now" in ChatCommand:

Note that in Python, the logical and operator && is and , and & is the bitwise and .

Answer 2

if "quit" in ChatCommand and "now" in ChatCommand:

另外，作为样式，Python中通常将CamelCase保留给Class es。

Answer 3

Use all() :

if all(word in ChatCommand for word in ("quit", "now")):

If you want to avoid matching quit within quite , you can use a regex:

import re
if all(re.search(regex, ChatCommand) for regex in (r"\bquit\b", r"\bnow\b")):

because the \\b word boundary anchors only match at the start and end of a word.