aTweet/clean_db.py

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import sqlite3
# Connect to the database
conn = sqlite3.connect('db.sqlite3')
cursor = conn.cursor()
# Keep users 'avery' and 'asd'
cursor.execute("SELECT id FROM users WHERE username IN ('avery', 'asd')")
keep_user_ids = [row[0] for row in cursor.fetchall()]
# Delete all users except 'avery' and 'asd'
cursor.execute("DELETE FROM users WHERE id NOT IN ({})".format(','.join('?' * len(keep_user_ids))), keep_user_ids)
# Get avery's user id
cursor.execute("SELECT id FROM users WHERE username = 'avery'")
avery_id = cursor.fetchone()[0]
# Keep only the first two tweets from 'avery' and delete all other tweets
cursor.execute("""
DELETE FROM tweets
WHERE id NOT IN (
SELECT id FROM tweets
WHERE user_id = ?
ORDER BY created_at ASC
LIMIT 2
)
""", (avery_id,))
# Delete all likes
cursor.execute("DELETE FROM likes")
# Delete all comments
cursor.execute("DELETE FROM comments")
# Delete all messages
cursor.execute("DELETE FROM messages")
# Delete all groups
cursor.execute("DELETE FROM groups")
# Delete all group members
cursor.execute("DELETE FROM group_members")
# Delete all posts
cursor.execute("DELETE FROM posts")
# Commit the changes and close the connection
conn.commit()
conn.close()
print("Database cleaned successfully.")