sage developer's guide should mention pyflakes

[saliola]

It would be nice if the Sage Developer's Guide include a section on pyflakes, since it is a very useful developer tool.

(Perhaps it might be a good idea to include a section on useful developer tools.)

Depends on #30361

CC: @nthiery @tobiasdiez @mkoeppe

Component: documentation

Keywords: days64, developer's guide

Issue created by migration from https://trac.sagemath.org/ticket/17992

[fchapoton]

Author: gh-tobiasdiez, mkoeppe

[fchapoton]

comment:1

was this done elsewhere ?

[mkoeppe]

Dependencies: #30361

[mkoeppe]

comment:2

Brief information was added in #30361, and there is #30453 with the goal of adding more.

See also #28936 Meta-ticket: Adopt mainstream Python testing/linting infrastructure, describe in Developer's Guide

[mkoeppe]

Changed author from gh-tobiasdiez, mkoeppe to none

[mkoeppe]

`src/doc/en/developer/tools.rst