* Fix enum members getting shadowed by parent attributes
* Move Enum._convert to EnumMeta._convert_
* Deprecate _convert

Fix socket(fileno=fd) by auto-detecting the socket's family, type,
and proto from the file descriptor. The auto-detection can be overruled
by passing in family, type, and proto explicitly.

Without the fix, all socket except for TCP/IP over IPv4 are basically broken:

>>> s = socket.create_connection(('www.python.org', 443))
>>> s
<socket.socket fd=3, family=AddressFamily.AF_INET6, type=SocketKind.SOCK_STREAM, proto=6, laddr=('2003:58:bc4a:3b00:56ee:75ff:fe47:ca7b', 59730, 0, 0), raddr=('2a04:4e42:1b::223', 443, 0, 0)>
>>> socket.socket(fileno=s.fileno())
<socket.socket fd=3, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('2003:58:bc4a:3b00::%2550471192', 59730, 0, 2550471192), raddr=('2a04:4e42:1b:0:700c:e70b:ff7f:0%2550471192', 443, 0, 2550471192)>
Signed-off-by: Christian Heimes <christian@python.org>

the same values as open().

add private method to enum to support replacing global constants with Enum members:
- search for candidate constants via supplied filter
- create new enum class and members
- insert enum class and replace constants with members via supplied module name
- replace __reduce_ex__ with function that returns member name, so previous Python versions can unpickle
modify IntEnum classes to use new method

add private method to enum to support replacing global constants with Enum members:
- search for candidate constants via supplied filter
- create new enum class and members
- insert enum class and replace constants with members via supplied module name
- replace __reduce_ex__ with function that returns member name, so previous Python versions can unpickle
modify IntEnum classes to use new method

Patch by Karan Goel.

Based on patch by Franck Michea.

fully qualified class names of Python implemented classes.

fix issue #17552: add socket.sendfile() method allowing to send a file over a socket by using high-performance os.sendfile() on UNIX. Patch by Giampaolo Rodola'·

Before:
<socket.socket fd=3, family=2, type=1, proto=0, laddr=('0.0.0.0', 0)>

Now:
<socket.socket fd=3, family=AddressFamily.AF_INET, type=SocketType.SOCK_STREAM, proto=0, laddr=('0.0.0.0', 0)>

Closes #18720.

are now created non-inheritable; add functions os.get/set_inheritable(),
os.get/set_handle_inheritable() and socket.socket.get/set_inheritable().

ModuleNotFoundError.

Fix line buffering of socket._fileobject

Issue #15842: the SocketIO.{readable,writable,seekable} methods now raise ValueError when the file-like object is closed.
Patch by Alessandro Moura.

Patch by Matt Joiner.

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r88622 | antoine.pitrou | 2011-02-26 00:07:44 +0100 (sam., 26 févr. 2011) | 5 lines

  Issue #7322: Trying to read from a socket's file-like object after a timeout
  occurred now raises an error instead of silently losing data.
  Patch by Ross Lagerwall.
........

occurred now raises an error instead of silently losing data.
Patch by Ross Lagerwall.

socket is now always non-blocking, regardless of the operating system.

raising a ValueError, to fix repr().

deallocated without explicit closing.  These warnings are silenced by
default, except in pydebug mode.

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r85420 | antoine.pitrou | 2010-10-13 18:17:14 +0200 (mer., 13 oct. 2010) | 5 lines

  Issue #10041: The signature of optional arguments in socket.makefile()
  didn't match that of io.open(), and they also didn't get forwarded
  properly to TextIOWrapper in text mode.  Patch by Kai Zhu.
........

didn't match that of io.open(), and they also didn't get forwarded
properly to TextIOWrapper in text mode.  Patch by Kai Zhu.