Fix import order in Python files

[LacombeLouis]

Description

Fix issue #418.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read the contributing guidelines
• I have updated the HISTORY.rst and AUTHORS.rst files
• Linting passes successfully : make lint
• Typing passes successfully : make type-check
• Unit tests pass successfully : make tests
• Coverage is 100% : make coverage
• Documentation builds successfully : make doc

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (614293e) to head (167abff).
Report is 276 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##            master      #420    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           39        39            
  Lines         4616      4895   +279     
  Branches       487       801   +314     
==========================================
+ Hits          4616      4895   +279     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.