Variables being overridden to initial values.

[p2bc]

Ok so I get all that, and changed my script, and yes it works. but I don't like it. BUT is works.

#!/usr/bin/python3*

'''
	Module name:
	Author:
	Contact: 
	Desc:
'''
__version__ = '0.0.1'

import shutil
import os, os.path
import datetime

TODAYS_DATE = str(datetime.date.today())
 
NUMBER_OF_BACKUP = 3
 
BACKUP_LOCATION = '/home/Superusr/Backup_Scripts/Test_01/Save_Location/'
FOLDER2BACKUP = '/home/Superusr/Backup_Scripts/Test_01/Sample_Folder'
 
CURRENT_BACKUP_NAME = FOLDER2BACKUP + "_" + TODAYS_DATE

CURRENT_LIST_OF_BACKUPS = []


def GET_MOST_RECENT_BACKUP_NAME():
	print("Step 2...")
	for names in os.listdir(BACKUP_LOCATION):
		CURRENT_LIST_OF_BACKUPS.append(names)
	
	CURRENT_LIST_OF_BACKUPS.sort()	
	
def SET_MOST_RECENT_BACKUP():
	print("Step 3...")
	RESULT = CURRENT_LIST_OF_BACKUPS[-1]
	return RESULT
		
def SET_OLDEST_BACKUP():
	print("Step 4...")
	RESULT = CURRENT_LIST_OF_BACKUPS[0]
	return  RESULT

def INITIAL_SETUP():
	print("Step 1...")
	GET_MOST_RECENT_BACKUP_NAME()
	
def main():
	INITIAL_SETUP()
	
	MOST_RECENT_BACKUP = SET_MOST_RECENT_BACKUP()
	OLDEST_BACKUP = SET_OLDEST_BACKUP()
	
	print("Most recent backup is: {}".format(MOST_RECENT_BACKUP))
		

if __name__ == "__main__": main()

I don't like it because it doesn't future proof the code, I know what I want to do next and I will have to switch it up.

Like, just moving "MOST_RECENT_BACKUP = SET_MOST_RECENT_BACKUP()" and "OLDEST_BACKUP = SET_OLDEST_BACKUP()"
out of the main() but after INITIAL_SETUP() function breaks it.

I guess it is a classic case of trying to run before you can walk.

Thanks again for your help.

---

After reviewing it some more, I understand why is breaks when the variable are breaking outside the main() function, because the intial_setup() function only get called then. Therefore not set before then.