chore: Fix "Complexity" issue in examples/example.py

[thepriefy]

Fixes #64

Checklist

• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the [Contribution Guide] and my PR follows them.
• I updated my branch with the master branch.
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added in line documentation to the code I modified

Short description of what this PR does:

• Fix "Complexity" issue in examples/example.py according to codeclimate report

If you have questions, please send an email to Sendgrid, or file a Github Issue in this repository.

[thepriefy]

I edited all lines which has an error except the line 22, 37, 40 and 43 (the line is too long).
Do I have to fix that too?
Also, I don't know why the travis failed. If there is something I need to fix, please tell me. :)

[thinkingserious]

Hi @thepriefy,

It would be good to fix the line is too long errors using this method.

The Travis failures are not related to your PR, please ignore.

With Best Regards,

Elmer

[thinkingserious]

Hello @thepriefy,

Thanks again for the PR!

We appreciate your contribution and look forward to continued collaboration. Thanks!

Team SendGrid DX