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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 caught try: with con: con.execute("insert into person(firstname) values (?)", ("Joe",)) except sqlite3.IntegrityError: print("couldn't add Joe twice") # Connection object used as context manager only commits or rollbacks transactions, # so the connection object should be closed manually con.close()
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