Clean src/sage/graphs/pq_trees.py

[dcoudert]

We fix all issues raised by ./sage -tox -e pycodestyle -- src/sage/graphs/pq_trees.py. In particular, we turn the lambda functions to functions.

CC: @dimpase

Component: graph theory

Author: David Coudert

Branch/Commit: b97a961

Reviewer: Frédéric Chapoton

Issue created by migration from https://trac.sagemath.org/ticket/34014

[dcoudert]

Branch: public/graphs/34014_pq

[dcoudert]

comment:1

When turning the lambda functions to actual functions, I have not added any documentation/doctest. The reason is that I don't know what could be a suitable documentation.

I have renamed the functions adding a _ to avoid considering them in the module's documentation.

---

New commits:

3026bcf

trac #34014: clean pq_trees.py

[dcoudert]

Commit: 3026bcf

[fchapoton]

comment:2

coverage is not 100%

[sagetrac-git]

Changed commit from 3026bcf to b97a961

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

b97a961

trac #34014: add missing doctests

[dcoudert]

comment:4

It took me some time to find appropriate doctests.

[dcoudert]

comment:5

green bot, please review ;)

[fchapoton]

comment:6

ok (mais fait trop chaud)

[fchapoton]

Reviewer: Frédéric Chapoton

[dcoudert]

comment:7

Thank you.

Fais attention à ne pas fondre.

[vbraun]

Changed branch from public/graphs/34014_pq to b97a961