#!/usr/bin/env python3 # -*- coding: utf-8 -*- # @descrip : operate SqLite intrface # @Time : 2020/04/22 21:57 # @Author : mingfei.tang import sqlite3 class SqLite3_Opt(): def __init__(self): print(sqlite3.apilevel) self.conn = sqlite3.connect(‘first.db‘) def create_table(self): self.cursor = self.conn.cursor() #create table -1 self.cursor.execute(‘‘‘create table user_tb( _id integer primary key autoincrement, name text, password text, gender text)‘‘‘) #create table -2 self.cursor.execute(‘‘‘create table order_tb( _id integer primary key autoincrement, item_name text, item_price text, item_number text, user_id inteter, foreign key(user_id) references user_tb(_id))‘‘‘) self.cursor.close() #insert-1 many def insert_many_value(self): self.cursor = self.conn.cursor() self.cursor.executemany(‘insert into user_tb values(null, ?, ?, ?)‘, ((‘孙悟空-1‘, ‘423456‘,‘male‘), (‘孙悟空-2‘, ‘423456‘,‘male‘), (‘孙悟空-3‘, ‘423456‘,‘male‘), (‘孙悟空-4‘, ‘423456‘,‘male‘))) self.conn.commit() self.cursor.close() #insert-2 single def insert_single_value(self): self.cursor = self.conn.cursor() self.cursor.execute(‘insert into user_tb values(null, ?, ?, ?)‘,(‘孙悟空-0‘, ‘423456‘,‘male‘)) self.conn.commit() self.cursor.close() #delete single def delete_single_data(self): self.cursor = self.conn.cursor() self.cursor.execute("DELETE FROM user_tb WHERE _id=?", (1,)) self.conn.commit() self.cursor.close() #update single def update_data(self): self.cursor = self.conn.cursor() self.cursor.execute("UPDATE user_tb SET name=? WHERE _id=?", ("猪八戒", 1)) self.conn.commit() self.cursor.close() #fatch all data def fetch_all(self): self.cursor = self.conn.cursor() self.cursor.execute("select * from user_tb") print(self.cursor.fetchall()) self.cursor.close() #fatch one data def fetch_one(self): self.cursor = self.conn.cursor() self.cursor.execute("select * from user_tb") print(self.cursor.fetchone()) self.cursor.close() #fatch many data def fetch_many(self): self.cursor = self.conn.cursor() self.cursor.execute("select * from user_tb") print(self.cursor.fetchmany(10)) self.cursor.close() def closedb(self): self.conn.close() class Unit_test(): def __init__(self): pass def infor_test(self): test = SqLite3_Opt() #test.create_table() #test.insert_single_value() #test.update_data() #test.delete_single_data() #test.fetch_all() #test.fetch_one() test.fetch_many() test.closedb() if __name__ == "__main__": utest=Unit_test() utest.infor_test()