标签:ble python oca root ide span str host except
本文链接:https://blog.csdn.net/Mr__lqy/article/details/85719603
import pymysql db = pymysql.connect(host=‘localhost‘, user=‘root‘, password=‘123456‘, port=3306, db=‘spiders‘) cursor = db.cursor() sql = ‘select * from students;‘ cursor.execute(sql) cursor.close() db.close()
2. 多字段动态插入mysql数据库中
import pymysql db = pymysql.connect(host=‘localhost‘,user=‘root‘, password=‘123456‘, port=3306, db=‘spiders‘) data = { ‘id‘: ‘20180606‘, ‘name‘: ‘Lily‘, ‘age‘: 20 } table = ‘students‘ keys = ‘, ‘.join(data.keys()) values = ‘, ‘.join([‘%s‘] * len(data)) sql = ‘INSERT INTO {table}({keys}) VALUES ({values})‘.format(table=table, keys=keys, values=values) try: cursor.execute(sql, tuple(data.values())) print(‘Successful‘) db.commit() except: print(‘Failed‘) db.rollback() cursor.close() db.close()
3. 数据更新插入mysql数据库中
import pymysql db = pymysql.connect(host=‘localhost‘,user=‘root‘, password=‘123456‘, port=3306, db=‘spiders‘) data = { ‘id‘: ‘20180606‘, ‘name‘: ‘Lily‘, ‘age‘: 25 } table = ‘students‘ keys = ‘, ‘.join(data.keys()) values = ‘, ‘.join([‘%s‘] * len(data)) sql = ‘INSERT INTO {table}({keys}) VALUES ({values}) ON DUPLICATE KEY UPDATE‘.format(table=table, keys=keys, values=values) update = ‘,‘.join([" {key} = %s".format(key=key) for key in data]) sql += update try: cursor.execute(sql, tuple(data.values())*2) print(‘Successful‘) db.commit() except: print(‘Failed‘) db.rollback() cursor.close() db.close()
标签:ble python oca root ide span str host except
原文地址:https://www.cnblogs.com/hzjdpawn/p/11618443.html