Method in my class returns TypeError: connect() missing 1 required positional argument [duplicate]-CodePudding

I know this question has probably been answered but I can't seem to find the solution to my issue. I am using this method in my class and it expects one more argument as it doesn't seem to account for "self".

import cx_Oracle
import os

class Oracle(object):
    def connect(self, username, password, hostname, port, sid):
        """ Connect to the database. """
        try:
            dsn = cx_Oracle.makedsn(host=hostname, sid=sid, port=port)
            self.db = cx_Oracle.connect(username, password, dsn)
        except cx_Oracle.DatabaseError as e:
            # Log 
            raise
        # If the database connection succeeded create the cursor
        # we-re going to use.
        self.cursor = self.db.cursor()

Now, if I execute

oracle = Oracle.connect(os.environ.get('db_user'), os.environ.get('db_pw'), 'itd-dbx-sbox', 1521, 'sbox')

I will get the following error:

TypeError: connect() missing 1 required positional argument: 'sid'

What am I doing wrong? Sorry, I am new to this. Thanks for your help!

CodePudding user response：

connect is an instance method, so you have to call the connect method with an instance of Oracle.

>>> oracle = Oracle()
>>> oracle.connect(<PARAM>)

This will automatically set self as the current passed instance(oracle) .