mirror of https://github.com/python/cpython
17 lines
567 B
Python
17 lines
567 B
Python
|
import sqlite3
|
||
|
|
|
||
|
|
con = sqlite3.connect(":memory:")
|
||
|
|
con.execute("create table person (id integer primary key, firstname varchar unique)")
|
||
|
|
|
||
|
|
# Successful, con.commit() is called automatically afterwards
|
||
|
|
with con:
|
||
|
|
con.execute("insert into person(firstname) values (?)", ("Joe",))
|
||
|
|
|
||
|
|
# con.rollback() is called after the with block finishes with an exception, the
|
||
|
|
# exception is still raised and must be catched
|
||
|
|
try:
|
||
|
|
with con:
|
||
|
|
con.execute("insert into person(firstname) values (?)", ("Joe",))
|
||
|
|
except sqlite3.IntegrityError:
|
||
|
|
print "couldn't add Joe twice"
|