How can a parameter of a function be made global?答案

【问题标题】：How can a parameter of a function be made global?How can a parameter of a function be made global?
【发布时间】：2022-12-01 23:08:54
【问题描述】：

Is it possible to make the script work without having to declare the variables outside the function?

import telepot

myId = '000000000'

def bot1(msg):
    global bot1msg1, bot1msg2, bot1msg3
    tokenbot1 = '000000000:AAH6AAH6AAH6AAH6AAH6'
    bot1 = telepot.Bot(tokenbot1)
    bot1msg1 = 'Msg 1'
    bot1msg2 = 'Msg 2'
    bot1msg3 = 'Msg 3'
    bot1.sendMessage(myId, msg)

bot1(bot1msg3)

NameError: name 'bot1msg3' is not defined

Make the script work with the variable outside the function

【问题讨论】：

When you call bot1(bot1msg3), the variable hasn't been created yet because the function hasn't ran yet. It is unclear what you are trying to do.
You're passing bot1msg3 to the function bot1 before you define it. That's the problem.

标签： python python-3.x

【解决方案1】：

(With all code parts that are no used commented), you should, at least, define the returnValue

#import telepot

myId = '000000000'
botAnswer = ''

def bot1(msg):
    #global bot1msg1, bot1msg2, bot1msg3
    tokenbot1 = '000000000:AAH6AAH6AAH6AAH6AAH6'
    #bot1 = telepot.Bot(tokenbot1)
    bot1msg1 = 'Msg 1'
    bot1msg2 = 'Msg 2'
    bot1msg3 = 'Msg 3'
    #bot1.sendMessage(myId, msg)
    return bot1msg3

botAnswer = bot1('Hi')
print(botAnswer)

【讨论】：