referencing a foreign key not working in SQL

Question

I'm trying to reference two seperate tables to create a third table, but SQL says there's a syntax error near FOREIGN

import sqlite3 as db
connection = db.connect("doctor_who_database")

cursor = connection.cursor()

cursor.execute("""CREATE TABLE IF NOT EXISTS doctor_who_database(
item_id TEXT PRIMARY KEY,
item TEXT)""")

cursor.execute("""CREATE TABLE IF NOT EXISTS doctor_who_database2(
person_id TEXT PRIMARY KEY,
season TEXT,
person TEXT)""")



cursor.execute("""CREATE TABLE IF NOT EXISTS doctor_who_database3(
id TEXT PRIMARY KEY,
item TEXT,
season TEXT,
person TEXT)""")

cursor.execute("""FOREIGN KEY(item_id) REFERENCES doctor_who_database(item_id)""")

Answer 1

The fields in FOREIGN KEY must be present in the table the FK is created upon, item_id is not a field in doctor_who_database3 , also FOREIGN KEY is not a command in itself, it should be put in the CREATE TABLE , for example

cursor.execute("""CREATE TABLE IF NOT EXISTS doctor_who_database3(
id TEXT PRIMARY KEY,
item TEXT,
season TEXT,
person TEXT,
FOREIGN KEY(id) REFERENCES doctor_who_database(item_id)""")