Neg tri tidy up

[shimwell]

Proposed changes

Makes some pep changes using flake8 to the code

Types of changes

What types of changes does your code introduce to the Paramak?

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code refactoring
• Documentation Update (if none of the other choices apply)
• New tests

Checklist

• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[codecov]

Codecov Report

Merging #210 (317b67d) into develop (29301a4) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 317b67d differs from pull request most recent head d02bb7f. Consider uploading reports for the commit d02bb7f to get more accurate results

@@           Coverage Diff            @@
##           develop     #210   +/-   ##
========================================
  Coverage    96.19%   96.19%           
========================================
  Files           79       79           
  Lines         5278     5263   -15     
========================================
- Hits          5077     5063   -14     
+ Misses         201      200    -1     

Impacted Files	Coverage Δ
paramak/parametric_components/tf_coil_casing.py	100.00% <ø> (ø)
...ramak/parametric_components/toroidal_field_coil.py	100.00% <ø> (ø)
...k/parametric_components/vacuum_vessel_inner_leg.py	89.06% <ø> (-0.17%)	⬇️
paramak/shape.py	95.21% <ø> (-0.03%)	⬇️
...ric_components/blanket_constant_thickness_arc_v.py	100.00% <100.00%> (ø)
paramak/parametric_components/blanket_fp.py	100.00% <100.00%> (ø)
...ak/parametric_components/center_column_circular.py	100.00% <100.00%> (ø)
paramak/parametric_components/extrude_rectangle.py	100.00% <100.00%> (ø)
...ak/parametric_components/inboard_firstwall_fccs.py	100.00% <100.00%> (ø)
...ramak/parametric_components/poloidal_field_coil.py	100.00% <100.00%> (ø)
... and 5 more

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