Add sub-directories to FTP site with Python

Python_Utility_FTP_Sub_Directories.py

import sys
from ftplib import FTP

def initialize_ftp_connection(ftp_servers, server_name):
    try:
        conf = ftp_servers[server_name]
        ftp_conn = FTP(conf[0])
        ftp_conn.login(user=conf[1], passwd=conf[2])
        ftp_conn.cwd(conf[3])
        return ftp_conn
    except Exception as e:
        print(str(e))
        exit()

def mod_folder(connection, folder_name, base_path, delete = False):
    if connection is None:
        return None
    connection.cwd(base_path)
    sub_folders = connection.nlst()
    for folder in sub_folders:
        try:
            connection.cwd(folder)
            if delete:
                connection.rmd(folder_name)
            else:
                connection.mkd(folder_name)
            connection.cwd("..")
        except Exception as e:
            print(str(e))


def main(argv):
    if len(argv) < 2:
        return -1
    file_name = str(argv[0])
    var = str(argv[1]).upper()
    if str(argv[1]).upper() in ["ADD", "NEW", "MAKE", "MKDIR"]:
        delete_flag = False
    elif str(argv[1]).upper() in ["RM", "DEL", "DELETE", "REM", "REMOVE"]:
        delete_flag = True
    else:
        print("Erorr. You must specify a delete or add flag in position 2. Use ADD, or DEL.")
        quit()

    ftp_servers = {
        "Clarcor": ["ftp_server", "my_username", "my_password", "/startingfolder"]
        , "Data": ["server 2", "ftpusername", "pass123456", "/anotherdir"]
        , "Archive": ["another_server", "ftpuser", "coolpass", "/anotherdir"]
    }

    ftp_connection = initialize_ftp_connection(ftp_servers, "server_2")
    mod_folder(ftp_connection, file_name, "/anotherdir", delete=delete_flag)


if __name__ == "__main__":
    main(sys.argv[1:])