lint & format weights/*.py part 4

[jGaboardi]

This PR:

• formats and lints weights/*.py – part 4 of $n$

[codecov]

Codecov Report

Merging #652 (f80ef93) into main (6112e8d) will decrease coverage by 0.0%.
The diff coverage is 89.7%.

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #652     +/-   ##
=======================================
- Coverage   84.7%   84.7%   -0.0%     
=======================================
  Files        139     139             
  Lines      14870   14869      -1     
=======================================
- Hits       12596   12595      -1     
  Misses      2274    2274             

Files	Coverage Δ
libpysal/weights/spatial_lag.py	92.9% <100.0%> (-0.2%)	⬇️
libpysal/weights/user.py	72.7% <85.7%> (ø)
libpysal/weights/spintW.py	91.0% <89.5%> (ø)