有没有办法在不使用全局的情况下在不同的函数中使用相同的变量？

Question

check1 = False
def adding():
    global f_num, s_num, check1
    check1 = True
    e.delete(0, END)
    f_num = e.get()

    s_num = e.get()
    e.delete(0, END)

def show_answer():
    if check1:
        e.insert(0,f_num+s_num) 

I'm new to coding and using this website...I'm using tkinter module to build a calculator. when I set the show_answer() function in the equal sign button it was supposed to show the answer to the addition to the numbers.

Answer 1

If you are using tkinter, then you can define it in your root. Like:

root.Variable = True

Here is an example:

from tkinter import *

root = Tk()

root.Check1 = 0

def command():
    print(root.Check1)
    root.Check1 += 1


Button(text="Hello World", command=command).grid()

root.mainloop()

It keeps adding 1 to root.Check1 and you can access the variable normally inside and outside the functions. You can use this concept. Or stay with globals and use return