Testing FTP support in urllib shouldn't use Debian FTP server

[serhiy-storchaka]

BPO	30164
Nosy	@orsenthil, @serhiy-storchaka, @miss-islington
PRs	bpo-30164 Add return statements in ftplib demo. #25968 [3.10] bpo-30164 Add missing return statements in ftplib documentation. (GH-25968) #25969 [3.9] bpo-30164 - Add missing return statements in ftplib documentation. (GH-25968) #25970

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/orsenthil'
closed_at = <Date 2021-05-07.13:50:48.703>
created_at = <Date 2017-04-26.04:50:03.025>
labels = ['3.7', 'type-bug', 'tests']
title = "Testing FTP support in urllib shouldn't use Debian FTP server"
updated_at = <Date 2021-05-07.14:12:57.185>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2021-05-07.14:12:57.185>
actor = 'miss-islington'
assignee = 'orsenthil'
closed = True
closed_date = <Date 2021-05-07.13:50:48.703>
closer = 'orsenthil'
components = ['Tests']
creation = <Date 2017-04-26.04:50:03.025>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 30164
keywords = []
message_count = 3.0
messages = ['292299', '292300', '393184']
nosy_count = 3.0
nosy_names = ['orsenthil', 'serhiy.storchaka', 'miss-islington']
pr_nums = ['25968', '25969', '25970']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue30164'
versions = ['Python 2.7', 'Python 3.5', 'Python 3.6', 'Python 3.7']

[serhiy-storchaka]

test_urllib2net.py uses ftp://ftp.debian.org/ for testing FTP support in urllib. But Debian just announced shutting down its public FTP services.

https://lists.debian.org/debian-announce/2017/msg00001.html

[orsenthil]

I had started taking some action on it recently: python/pythondotorg#1069

I verified that only one test module is affected and rest of our ftp.debian.org references are examples/docstrings that will need to be updated eventually too.

[orsenthil]

This has been fixed here - https://github.com/python/cpython/pull/2755/files

Python docs demonstrate the usage of ftplib using ftp.debian.org.
I think, it is perfectly reasonable and welcome thing to do so.

https://docs.python.org/3/library/ftplib.html

Closing this ticket as fixed. I will add some minor improvement to the documentation usage though.