python + mysql 实现表删除数据

时间:2021-06-06 22:16:04

实例如下:

import pymysql

def Delete_From():
#打开数据库链接
db = pymysql.connect("localhost","root","123456","test")

# 使用cursor()方法获取操作游标
cursor = db.cursor()

# SQL语句更新数据
sql = """DELETE FROM student WHERE ID = %s"""%(3)

try:
# 执行SQL语句
cursor.execute(sql)
# 提交到数据库执行
db.commit()
print("删除数据成功")

except Exception as e:
print("删除数据失败:case%s"%e)
#发生错误时回滚
db.rollback()

finally:
# 关闭游标连接
cursor.close()
# 关闭数据库连接
db.close()

def main():
Delete_From()

if __name__ == '__main__':
main()