I am working on a simple auth system for one of my projects. I have a PostgreSQL database with 2 tables, "public"."app_users" and "public"."active_logins" The app users table has an auto generated uuid column, an email, a SHA256 password hash and a username. I have 1 user with the email demo@example.com and the password Password1 which has a hash of 19513fdc9da4fb72a4a05eb66917548d3c90ff94d5419e1f2363eea89dfee1dd I am connecting to Postgres with psycopg2, This is my python code # Import dependencies import psycopg2 import hashlib # Connect to the database conn = psycopg2.connect( dbname = "postgres", user = "postgres", password = "VotesPostgresAdmin1!73e796£4fJyTt!uTkdDmw£qo!xgt!", host = "localhost", port = "5432" ) def getLoginToken(email, password): # Hash the provided password hashedPassword = str(hashlib.sha256(password.encode()).hexdigest()) # Print the hashed password to the terminal print("") print("The hashed password is:") print(hashedPassword) # Create a cursor cursor = conn.cursor() # Get the uuid of the user with the corresponding login credentials cursor.execute(""" SELECT uuid FROM "public"."app_users" WHERE email = %s AND password_hash = %s; """, (email, hashedPassword)) userUuid = cursor.fetchone()[0] # Print the user uuid to the terminal print("") print("The user UUID is:") print(userUuid) # Create a new auth token cursor.execute(""" INSERT INTO "public"."active_logins" (user_uuid) VALUES (%s) RETURNING token; """, (userUuid,)) authToken = cursor.fetchone()[0] # Print the auth tokent to the terminal print("") print("The new auth token is:") print(authToken) print("") getLoginToken('demo@example.com', 'Password1') When I run this I get this response: The hashed password is: 19513fdc9da4fb72a4a05eb66917548d3c90ff94d5419e1f2363eea89dfee1dd The user UUID is: 5b0d019f-284a-45fb-aeea-c716728e756f The new auth token is: caad4fd2-6cbb-4d1a-8f52-ee250f7bff1a But in my database there is no row for the auth token in the "public"."active_logins" table Do you know what is wrong with my code? Continue reading...