if statement not working after deploy source code to ubuntu - python 2.7

Question

I'm working on a python project and facing an issue, I have a snippet of code like bellow:

if published_to is not '*':
    if 'T00:00:00.000Z' not in published_to:
        published_to = published_to.replace('T00:00:00.000Z', '')
        published_to = published_to.split('-')[::-1]
        published_to = '-'.join(published_to) + 'T00:00:00.000Z'

And, the above code running like charm when I run my server on windows with python 2.7, but when I deploy the project to Ubuntu 16.04 with the same version of python it's running through the body of "if" statement no mater published_to equal to * or not. So, could anyone please tell me the reason???

Answer 1

If you want to check whether published_to is equal to '*' or not, then use != :

if published_to != '*':

Using is not checks object identity , which is a stronger test than equality and not what you are looking for here. (Basically, you can have two different string objects that contain the same text - different objects, but they're equal ).