Problem with reference in python

Question

def setUp(self):
    self.verificationErrors = []

    self.selenium = selenium("localhost", 5555, "*chrome", "http://www.address.com/")
    self.selenium.start()

def test_sel__TestCase5(self):

    sel = self.selenium
    sel.open('/')

and this is a part of code which I'm using in all my testcases:

    text='$'

    try: 
        self.failIf(sel.is_text_present(text))
    except AssertionError, e: 
        self.verificationErrors.append(str(e))

so now I have a lot of redundant at this moment.

I'll be grateful if someone help me to create some helper with name SeleniumHelper with the method Assert. Something like:

class SeleniumHelper:

    def __init__(self):
        """Constructor"""

    @staticmethod
    def AssertText(text):
        try: self.failIf(sel.is_text_present(text))
        except AssertionError, e: return str(e)

and using it in testcases like

 self.verificationErrors.append(SeleniumHelper.AssertText("$"))

Answer 1

You have to pass both self and text if you want to access self.

def assert_text_missing(self, text):
    sel = self.selenium
    try:
        self.failIf(sel.is_text_present(text))
    except AssertionError, e:
        self.verificationErrors.append(str(e))

And then you'd use it like this:

self.assert_text_missing(text)