Python 2.7连接字符串到PostgreSQL(OOP方法)

Question

我是python的新手,我正在努力做到这一点.我正在使用Python 2.7和PostgreSQL 9.3:

#! F:\Python2.7.6\python    
import psycopg2

class Database:   
    host = "192.168.56.101"
    user = "testuser"
    passwd = "passwd"
    db = "test"

    def __init__(self):
        self.connection = psycopg2.connect( host = self.host,
                                            user = self.user,
                                            password = self.passwd,
                                            dbname = self.db )
        self.cursor = self.connection.cursor

    def query(self, q):
        cursor = self.cursor
        cursor.execute(q)
        return cursor.fetchall()

    def __del__(self):
        self.connection.close()

if __name__ == "__main__":
    db = Database()
    q = "DELETE FROM testschema.test"
    db.query(q)

但是我收到错误"AttributeError:'builtin_function_or_method'对象没有属性'execute'".我想我应该在数据库类中添加类似self.execute =的东西,但我无法弄清楚究竟需要放在那里.有什么建议？

Answer 1

你最后错过了括号

self.cursor = self.connection.cursor()

要么

cursor = self.cursor()

但不是两个