Fix syntax warning over comparison of literals using is.

[tirkarthi]

Description: Fixes syntax warnings. Closes #26

Reviewers:

• tag reviewer
• tag reviewer

Merge checklist:

• All reviewers approved
• CI build is green
• Version bumped
• Changelog record added
• Documentation updated (not only docstrings)
• Commits are squashed

Post merge:

• Create a tag
• Check new version is pushed to PyPI after tag-triggered build is
  finished.
• Delete working branch (if not needed anymore)

Author concerns: List any concerns about this PR - inelegant
solutions, hacks, quick-and-dirty implementations, concerns about
migrations, etc.

[openedx-webhooks]

Thanks for the pull request, @tirkarthi! I've created OSPR-4406 to keep track of it in JIRA. JIRA is a place for product owners to prioritize feature reviews by the engineering development teams.

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[natabene]

@tirkarthi Thank you for the contribution! When you have a chance, could you please send in a signed Contributor Agreement mentioned in the earlier comment? You only need to do this once and we can then review all your future code contributions. Thanks

[tirkarthi]

Sorry, I might not be able to go ahead due to CLA. Since the fix is simple enough I will leave it to someone who can move it forward with the patch.

[openedx-webhooks]

@tirkarthi Even though your pull request wasn’t merged, please take a moment to answer a two question survey so we can improve your experience in the future.

[natabene]

@tirkarthi Sorry to hear, is there any way I can help you with the CLA? Are you missing necessary equipment or do the rights for this change not belong to you?