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bpo-40635: Fix getfqdn() docstring and docs #27971

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Merged
merged 7 commits into from
Aug 26, 2021
Merged

bpo-40635: Fix getfqdn() docstring and docs #27971

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6df2299
Fix getfqdn() docstring and docs
akulakov Aug 26, 2021
dfe540a
update for accuracy
akulakov Aug 26, 2021
04eebb3
add the note on fallback logic
akulakov Aug 26, 2021
3730b48
use consistent quoting for name in docstring
akulakov Aug 26, 2021
a17e076
Update Lib/socket.py
akulakov Aug 26, 2021
0791bd9
updated rst paragraph per comments
akulakov Aug 26, 2021
5f74857
re-add newline
akulakov Aug 26, 2021
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5 changes: 3 additions & 2 deletions Doc/library/socket.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -808,8 +808,9 @@ The :mod:`socket` module also offers various network-related services:
it is interpreted as the local host. To find the fully qualified name, the
hostname returned by :func:`gethostbyaddr` is checked, followed by aliases for the
host, if available. The first name which includes a period is selected. In
case no fully qualified domain name is available, the hostname as returned by
:func:`gethostname` is returned.
case no fully qualified domain name is available and *name* was provided,
it is returned unchanged. If *name* was empty or equal to ``'0.0.0.0'``,
the hostname from :func:`gethostname` is returned.


.. function:: gethostbyname(hostname)
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5 changes: 3 additions & 2 deletions Lib/socket.py
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Expand Up @@ -782,8 +782,9 @@ def getfqdn(name=''):
An empty argument is interpreted as meaning the local host.

First the hostname returned by gethostbyaddr() is checked, then
possibly existing aliases. In case no FQDN is available, hostname
from gethostname() is returned.
possibly existing aliases. In case no FQDN is available and `name`
was given, it is returned unchanged. If `name` was empty or '0.0.0.0',
hostname from gethostname() is returned.
"""
name = name.strip()
if not name or name == '0.0.0.0':
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