Call local variable of previous function from another function with Python3 & tkinter

[Hannibal]

Hi

I am building password generator with python and tkinter as GUI. The function copy should copy paStr variable which reside in another function called def output. I couldn't find any workaround to reach paStr variable and make it possible for the copy function to copy paStr to clipboard.
Any help and hints are veeeery appreciated.

Using Python 3.8, VS Code, OS: Windows 10 pro

copy_pass button is in relation with def copy
paStr variable holds the generated passwords and it's the variable of def output

I deleted 2/3 of the code and pasted the needed part only.

For smooth troubleshooting in chars length insert 8 and in how many password insert 3.

I suggest to try the code on your preferable interpreter, it is impossible to troubleshoot it from your smartphone or with random thoughts without testing.

Thank you very much
Stay Safe

My code:

import tkinter as tk
import tkinter.font as tkFont
from tkinter import *
from tkinter import ttk
import random
import string



root = tk.Tk()
root.title("P-GEN")

width=600
height=550
screenwidth = root.winfo_screenwidth()
screenheight = root.winfo_screenheight()
alignstr = '%dx%d+%d+%d' % (width, height, (screenwidth - width) / 2, (screenheight - height) / 2)
root.geometry(alignstr)
root.resizable(width=False, height=False)

passLen = IntVar()
passNum = IntVar()


def randompassword():

    uchars = int(passLen.get() / 4)

    lchars = int(passLen.get() / 4)

    dchars = int(passLen.get() / 4)

    schars = int(passLen.get() / 4)

    str_uchars, str_lchars, str_dchars, str_schars = '', '', '', ''

    for i in range(uchars):
        str_uchars += random.SystemRandom().choice(string.ascii_uppercase)

    for i in range(lchars):
        str_uchars += random.SystemRandom().choice(string.ascii_lowercase)

    for i in range(dchars):
        str_uchars += random.SystemRandom().choice(string.digits)

    for i in range(schars):
        str_uchars += random.SystemRandom().choice(string.punctuation)

    random_str = str_uchars + str_lchars + str_dchars + str_schars

    random_str = ''.join(random.sample(random_str, len(random_str)))

    l = list(random_str)

    random.shuffle(l)

    result = ''.join(l)

    return str(result)
    
def output():
  n = 0
  while n < passNum.get():
    paStr = randompassword() + '\n'
    print(paStr)
    n=n+1
    generated_pass.insert('1.0', paStr)

    
'''
def copy():
    # Iam stucked here, any hints please to return the paStr varaible from the previous function (def output) so I can make it possible to be copied to clipboard.
  I tried this but as I said, could not find how to reach local variable of the previous function.

  copy_pass.clipboard_clear()
  copy_pass.clipboard_append(paStr)
  copy_pass.update()
'''


title_bar=tk.Label(root)
title_bar["bg"] = "#393d49"
ft = tkFont.Font(family='Times',size=18)
title_bar["font"] = ft
title_bar["fg"] = "#33ed3f"
title_bar["justify"] = "center"
title_bar["text"] = "P-GEN"
title_bar["relief"] = "flat"
title_bar.place(x=0,y=0,width=600,height=31)


enter_chars=tk.Label(root)
ft = tkFont.Font(family='Times',size=10)
enter_chars["font"] = ft
enter_chars["fg"] = "#333333"
enter_chars["justify"] = "left"
enter_chars["text"] = "Enter Chars Length"
enter_chars["relief"] = "flat"
enter_chars.place(x=20,y=160,width=169,height=30)

pass_length=tk.Entry(root)
pass_length["bg"] = "#d2f4d4"
pass_length["borderwidth"] = "3px"
ft = tkFont.Font(family='Times',size=10)
pass_length["font"] = ft
pass_length["fg"] = "#333333"
pass_length["justify"] = "center"
pass_length["text"] = "Entry"
pass_length["relief"] = "sunken"
pass_length.place(x=220,y=160,width=142,height=30)
pass_length["textvariable"] = passLen

enter_passN=tk.Label(root)
ft = tkFont.Font(family='Times',size=10)
enter_passN["font"] = ft
enter_passN["fg"] = "#333333"
enter_passN["justify"] = "left"
enter_passN["text"] = "Enter How Many Passwords"
enter_passN["relief"] = "flat"
enter_passN.place(x=20,y=210,width=169,height=31)

pass_num=tk.Entry(root)
pass_num["bg"] = "#d2f4d4"
pass_num["borderwidth"] = "3px"
ft = tkFont.Font(family='Times',size=10)
pass_num["font"] = ft
pass_num["fg"] = "#333333"
pass_num["justify"] = "center"
pass_num["text"] = "Entry"
pass_num["relief"] = "sunken"
pass_num.place(x=220,y=210,width=142,height=30)
pass_num["textvariable"] = passNum

gen_pass=tk.Button(root)
gen_pass["activebackground"] = "#7ff14e"
gen_pass["bg"] = "#efefef"
ft = tkFont.Font(family='Times',size=10)
gen_pass["font"] = ft
gen_pass["fg"] = "#000000"
gen_pass["justify"] = "center"
gen_pass["text"] = "Generate Passwords"
gen_pass["relief"] = "raised"
gen_pass.place(x=20,y=270,width=142,height=30)
gen_pass["command"] = output

generated_pass=tk.Text(root)
generated_pass["bg"] = "#d2f4d4"
generated_pass["borderwidth"] = "3px"
ft = tkFont.Font(family='Times',size=10)
generated_pass["font"] = ft
generated_pass["fg"] = "#333333"
generated_pass["relief"] = "sunken"
generated_pass.place(x=220,y=270,width=346,height=192)

copy_pass=tk.Button(root)
copy_pass["activebackground"] = "#7ff14e"
copy_pass["bg"] = "#efefef"
ft = tkFont.Font(family='Times',size=10)
copy_pass["font"] = ft
copy_pass["fg"] = "#000000"
copy_pass["justify"] = "center"
copy_pass["text"] = "Copy Passwords"
copy_pass["relief"] = "raised"
copy_pass.place(x=20,y=320,width=142,height=30)
#copy_pass["command"] = copy 



if __name__ == "__main__":
    
    root.mainloop()