Pylint Rules : How To Solve Undefined Variable?

I get some message from pylint rules : from scrapy.spiders import Spider class MySpider(Spider): #Undefined variable 'Spider' name = 'get' start_urls = ['']

Solution 1:

It seems that there is a bug in pytest I ran the following tests with tox:

[tox]
skipsdist=Trueenvlist=py{27,34}-pylint{141,142,143,144,145}

[testenv]
whitelist_externals=pylintdeps=pylint141:pylint==1.4.1pylint142:pylint==1.4.2pylint143:pylint==1.4.3pylint144:pylint==1.4.4pylint145:pylint==1.4.5commands=pylint-rntest.py

on the following file

"""Custom exceptions"""classMyException(Exception):
    """My custom exception"""def__init__(self, message):
        super(MyException, self).__init__(message)

I obtain the following result:

ERROR:   py27-pylint141:commandsfailedERROR:   py27-pylint142:commandsfailedERROR:   py27-pylint143:commandsfailedERROR:   py27-pylint144:commandsfailedpy27-pylint145:commandssucceededERROR:   py34-pylint141:commandsfailedERROR:   py34-pylint142:commandsfailedERROR:   py34-pylint143:commandsfailedERROR:   py34-pylint144:commandsfailedpy34-pylint145:commandssucceeded

With those errors:

************* Module test
E:7,27: Undefined variable 'self' (undefined-variable)E:7,42: Undefined variable 'message' (undefined-variable)

Assuming this, the best way is to move to at least the version 1.4.5 of pylint.

Solution 2:

You do not have to declare variables in Python. And your class definition is wrong. In Python you dont need parameters and brackets for it. Class Definition Syntax

classMySpider: 
    #your code here