python中关于executemany以及序列的实例详解

import sqlite3 persons=[   ("Jim","Green"),   ("Hu","jie")   ] conn=sqlite3.connect(":memory:") conn.execute("CREATE TABLE person(firstname,lastname)") conn.executemany("INSERT INTO person(firstname,lastname) VALUES(?,?)",persons) for row in conn.execute("SELECT firstname,lastname FROM person"):   print(row)    print("I just deleted",conn.execute("DELETE FROM person").rowcount,"rows")

y ========('Jim', 'Green')('Hu', 'jie')I just deleted 2 rows