PEP8 updates to examples for v1.0.0

[sbenthall]

Please ensure your pull request adheres to the following guidelines:

• Tests for new functionality/models or Tests to reproduce the bug-fix in code.
• Updated documentation of features that add new functionality.
• Update CHANGELOG.md with major/minor changes.

[codecov-io]

Codecov Report

Merging #974 (6c7f40f) into master (05ef324) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #974   +/-   ##
=======================================
  Coverage   71.84%   71.84%           
=======================================
  Files          62       62           
  Lines        9204     9204           
=======================================
  Hits         6613     6613           
  Misses       2591     2591           

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