main.py

from sys import argv
import psycopg2


def get_connection():
    db_connect = psycopg2.connect(host="localhost", database="postgres", user="postgres", password="postgres")
    db_connect.set_session(autocommit=True)
    return db_connect


def is_admin(username: str) -> bool:
    conn = get_connection()

    with conn.cursor() as cursor:
        cursor.execute("""SELECT is_admin FROM users WHERE username = '%s' """ % username)
        result = cursor.fetchone()

    # fetchone gibt NONE zurück, falls kein Benutzer gefunden wird
    if result is None:
        return False

    admin, = result
    return admin


if __name__ == "__main__":
    username = str(argv[1])
    print(username + " is an admin: " + str(is_admin(username)))