使用来自另一个 function python3 的值

Question

I have this code, but i dont know how to use the "age" from the user in the other function any clue what i have wrong?

def accounts():
    yourCode = input("Please enter your user code. \nIf you already have an account, type your account user code. \nOtherwise, enter a new one to create an account: ")

   
    with open("users.txt", "r") as rf:
        users = rf.readlines() 
        for each_user in [user.split(",") for user in users]: 
            if each_user[0] == yourCode: 
                print(f"Welcome {each_user[1]}") 
                age = each_user[2]
                xxApp() 
                return None 
    with open("users.txt", "a") as af:
        name = input("Please enter your name: ")
        age = input("Enter your age: ")
        af.write(f"{yourCode},{name},{age}\n") 
        print(f"Thank you {name}, your information has been added.")
        xxApp()


def xxApp():
    age = each_user[2]
    print(age)

Answer 1

Pass it as a parameter

def accounts():
    yourCode = input("Please enter your user code. \nIf you already have an account, type your account user code. \nOtherwise, enter a new one to create an account: ")

   
    with open("users.txt", "r") as rf:
        users = rf.readlines() 
        for each_user in [user.split(",") for user in users]: 
            if each_user[0] == yourCode: 
                print(f"Welcome {each_user[1]}") 
                xxApp(each_user) 
                return None 
    ...


def xxApp(user):
    age = user[2]
    print(age)

Answer 2

You're defining age = each_user[2] , but the each_user variable is only available in the scope of accounts() .

You can read about python scopes here

I would modify the xxApp() function to take in a variable as a parameter like this

def xxApp(each_user):
    age = each_user[2]
    print(age)

then you call xxApp() with the each_user passed as a parameter, so it is available inside the scope of xxApp() , like this xxApp(each_user)