? ?以后再也不用每次都重新寫啦！

? ?

import MySQLdb OperationalError = MySQLdb.OperationalError class MySQL: def __init__(self,host,user,password,port=3306,charset="utf8"): self.host=host self.port=portself.user=user self.password=password self.charset=charset try: self.conn=MySQLdb.connect(host=self.host,port=self.port,user=self.user,passwd=self.password)self.conn.autocommit(False)self.conn.set_character_set(self.charset) self.cur=self.conn.cursor() except MySQLdb.Error as e: print("Mysql Error %d: %s" % (e.args[0], e.args[1])) def __del__(self):self.close()def selectDb(self,db): try: self.conn.select_db(db) except MySQLdb.Error as e: print("Mysql Error %d: %s" % (e.args[0], e.args[1])) def query(self,sql): try: n=self.cur.execute(sql) return n except MySQLdb.Error as e: print("Mysql Error:%s\nSQL:%s" %(e,sql)) def fetchRow(self): result = self.cur.fetchone() return result def fetchAll(self): result=self.cur.fetchall() desc =self.cur.description d = [] for inv in result: _d = {} for i in range(0,len(inv)): _d[desc[i][0]] = str(inv[i]) d.append(_d) return d def insert(self,table_name,data): columns=data.keys()_prefix="".join(['INSERT INTO `',table_name,'`'])_fields=",".join(["".join(['`',column,'`']) for column in columns])_values=",".join(["%s" for i in range(len(columns))])_sql="".join([_prefix,"(",_fields,") VALUES (",_values,")"])_params=[data[key] for key in columns]return self.cur.execute(_sql,tuple(_params)) def update(self,tbname,data,condition):_fields=[]_prefix="".join(['UPDATE `',tbname,'`','SET'])for key in data.keys():_fields.append("%s = %s" % (key,data[key]))_sql="".join([_prefix ,_fields, "WHERE", condition ])return self.cur.execute(_sql)def delete(self,tbname,condition):_prefix="".join(['DELETE FROM `',tbname,'`','WHERE'])_sql="".join([_prefix,condition]) return self.cur.execute(_sql)def getLastInsertId(self): return self.cur.lastrowid def rowcount(self): return self.cur.rowcount def commit(self): self.conn.commit() def rollback(self):self.conn.rollback()def close(self): self.cur.close() self.conn.close()if __name__=='__main__':n=MySQL('127.0.0.1','root','123456',3306)n.selectDb('test')tbname='map'a=({'id':3,'x':3,'y':3},{'id':4,'x':4,'y':4},{'id':5,'x':5,'y':5})for d in a:n.insert(tbname,d)n.commit()

?一個重量級的MySQL-Python 封裝類：facebook python mysql

轉載于:https://blog.51cto.com/weipengfei/1269034

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