Python - How to print Sqlite table

问题

Here I have some simple python code to query a sqlite3 database.

import sqlite3 as lite

conn = lite.connect('db/posts.db')
cur = conn.cursor()

def get_posts():
    cur.execute("SELECT * FROM Posts")
    print(cur.fetchall())

get_posts()

I have already created the table Posts. When I run this I get no errors, and it just prints out []. I know that the table Posts isn't empty, I created it in a REPL. Why is this not working?

Any help is appreciated!

回答1:

Use a context manager, so you don´t have to commit!

def get_posts():
    with conn:
        cur.execute("SELECT * FROM Posts")
        print(cur.fetchall())

回答2:

Turns out I just forgot to use conn.commit(). Hope this helps someone.

来源：https://stackoverflow.com/questions/17015980/python-how-to-print-sqlite-table