生活就是这样，有时候想念也是一种幸福，是那样的美所以愿每一个身边的朋友都珍惜自己来之不易的幸福吧，不管你的幸福是小时大，做最真实的自己，拥有最平凡的幸福！
c=db.cursor()
max_price=5
c.execute("""SELECT spam, eggs, sausage FROM breakfast
WHERE price < %s""", (max_price,))
注意，上面的SQL字符串与后面的tuple之间的分隔符是逗号，平时拼写SQL用的是%。
如果按照以下写法，是容易产生SQL注入的：
c.execute("""SELECT spam, eggs, sausage FROM breakfast
WHERE price < %s""" % (max_price,))
这个和PHP里的PDO是类似的，原理同MySQL Prepared Statements。
Python
Using the Python DB API, don't do this:
# Do NOT do it this way.
cmd = "update people set name='%s' where id='%s'" % (name, id) curs.execute(cmd)
Instead, do this:
cmd = "update people set name=%s where id=%s" curs.execute(cmd, (name, id))
Note that the placeholder syntax depends on the database you are using.
'qmark' Question mark style, e.g. '...WHERE name=?' 'numeric' Numeric, positional style, e.g. '...WHERE name=:1' 'named' Named style, e.g. '...WHERE name=:name' 'format' ANSI C printf format codes, e.g. '...WHERE name=%s' 'pyformat' Python extended format codes, e.g. '...WHERE name=%(name)s'
The values for the most common databases are:
>>> import MySQLdb; print MySQLdb.paramstyle format >>> import psycopg2; print psycopg2.paramstyle pyformat >>> import sqlite3; print sqlite3.paramstyle qmark
So if you are using MySQL or PostgreSQL, use %s (even for numbers and other non-string values!) and if you are using SQLite use ?
本文Pyhton中防止SQL注入的方法到此结束。幽幽的深谷显的骇人的清静和阴冷。小编再次感谢大家对我们的支持！
