python3连接mysql-RickyHuL
class ConMysql: def __init__(self, host, username, password, database):self._database = database
self._host = host
self._user = username
self._passwd = password
def connect(self):
"""连接数据库，执行SQL语句，返回元组"""
#连接数据库
try:
self._db = pymysql.connect(self._host, self._user, self._passwd, self._database)
except (ConnectionRefusedError, pymysql.err.OperationalError, pymysql.err.InternalError) as _con_err:
return False, _con_err
else:
return True, 'OK'
def get_data(self, _sql_str, s='r'):
# 查询
_cur = self._db.cursor()
try:
_cur.execute(_sql_str)
except (pymysql.err.InternalError, pymysql.err.OperationalError, pymysql.err.ProgrammingError) as _sql_err:
_cur.close()
return False, _sql_err
if s == 'r'
_cur.close()
_array = _cur.fetchall()
return True, _array
else:
_cur.close()
self._db.commit()
return True, 'OK'
def edit_data(self, _sql_str):
# 修改
return self.get_data(_sql_str, 'w')
def __del__(self):
self._db.close()
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