pycodestyle cleanup in src/sage/graphs/generators/smallgraphs.py (part 1) #34042
Description
Fix issues reported by command pycodestyle in small graphs.py, except some E741 ambiguous variable name`, from line 3208 till the end of the file.
Component: graph theory
Author: David Coudert
Branch/Commit: e4986ba
Reviewer: Travis Scrimshaw
Issue created by migration from https://trac.sagemath.org/ticket/34042