Python script placed in /usr/bin not saving data in sqlite db - python-3.x

Question

I wrote a program which gets username and password from the user and creates a table in an SQLite DB then sends those data through a connection to DB.
It was working fine until I added the shebang in my code, then I made it executable(chmod +x) and after all, I put that file into /usr/bin so that I could use it anywhere in the terminal. now it runs but it doesn't work (it doesn't add data to DB).
here is my code:
#!/usr/bin/python3
__author__ = "Taha Jalili"
__license__ = "GPL"
__version__ = "1.0.0"
__email__ = "tahajalili#gmail.com"
import sys
import sqlite3
from sqlite3 import *
import inquirer
SQL_CREATE_STATEMENT = '''CREATE TABLE password
(id integer PRIMARY KEY NOT NULL,username text, password text, source text)'''
SQL_INSERT_STATEMENT = '''INSERT INTO password (username, password, source)VALUES(?,?,?)'''
DATABASE_PATH = '/home/taha/lessons/projects/passStorage/passDB.db'
def create_connection(db_file):
try:
conn = sqlite3.connect(db_file)
return conn
print('Connection created.')
except Error as e:
return e
# def create_table(connection, sql_commands):
# c = connection.cursor()
# c.execute(sql_commands)
# print('=> Table created.')
def get_input():
USERNAME = input('username: ')
PASSWORD = input('password: ')
SOURCE = input('source: ')
return USERNAME,PASSWORD,SOURCE
def insert_date(connection,data):
try:
c = connection.cursor()
c.execute(SQL_INSERT_STATEMENT, data)
print('=> Data insertion done.')
except Error as e:
return e
def show_info(connection):
c = connection.cursor()
info = c.execute('SELECT * FROM password ORDER BY id')
print('YOUR PASSWORDS'.center(45,'-'))
print('(id, username, password, source)')
for row in info:
print(row,'')
print('\n')
def ask_again():
user_choice = input("Wish to continue? Y/N ")
if user_choice == 'y' or user_choice == 'Y':
main()
elif user_choice == 'n' or user_choice == 'N':
print("==> BYE <==")
sys.exit(0)
def main():
conn = create_connection(DATABASE_PATH)
# create_table(conn, SQL_CREATE_STATEMENT)
questions = [
inquirer.List(
'job',
message = 'What should I do?',
choices=['Add data','Show saved data.']
),
]
answers = inquirer.prompt(questions)
if answers['job'] == 'Add data':
conn2 = create_connection(DATABASE_PATH)
insert_date(conn2,get_input())
elif answers['job'] == 'Show saved data.':
show_info(conn)
ask_again()
conn.commit()
conn.close()
if __name__ == '__main__':
main()