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那么,我如何宣布一个变数的全球,然后利用一项职能分配它?
原标题:How do I declare a variable global then then assign it using a function?

我的问题是很简单,我如何这样做。

def user_commands():
    def take_command():
    try:
        with sr.Microphone() as source:
            print( listening... )
            voice = listener.listen(source)
            command = listener.recognize_google(voice)
            command = command.lower()
            if  alexa  in command:
                command = command.replace( alexa ,   )
                print(command)
    except:
        pass
    return command

def run_alexa():
    global command
    command = user_commands()

what is happening when I do this is: NameError: name command is not defined

问题回答

你可以宣布它属于某一类别,或只是将它定义为最高阶层。 我将一个称为“一”的变量作为例子。 你们也可以在不设定变数的情况下通过你想要获得的职能的价值。

class myClass():
    def __init__(self):
        self.a = 1
    def user_commands(self):
        command = self.a
        return command
    
    def run_alexa(self):
        global command
        command = self.user_commands()
this = myClass()
this.run_alexa()    
a = 1
def user_commands():
    command = a
    return command

def run_alexa():
    global command
    command = user_commands()
run_alexa()
def user_commands(my_command):
    command = my_command
    return command

def run_alexa(this_var):
    global command
    command = user_commands(this_var)
run_alexa(1)




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