[PATCH 4 of 7] byterange: use absolute_import

[Gregory Szorc]

# HG changeset patch
# User Gregory Szorc <gregory.szorc at gmail.com>
# Date 1450762934 28800
#      Mon Dec 21 21:42:14 2015 -0800
# Node ID b2b3e0f020a6f11c742cbf8fc76f702a92124818
# Parent  b1e8174e8a360db3f5e5340ea555c9ef0a1f43e7
byterange: use absolute_import

There were a lot of imports scattered around this file. They have been
consolidated at the top of the file where they belong.

diff --git a/mercurial/byterange.py b/mercurial/byterange.py
--- a/mercurial/byterange.py
+++ b/mercurial/byterange.py
@@ -16,13 +16,27 @@
 # Copyright 2002-2004 Michael D. Stenner, Ryan Tomayko
 
 # $Id: byterange.py,v 1.9 2005/02/14 21:55:07 mstenner Exp $
 
+from __future__ import absolute_import
+
+import email
+import ftplib
+import mimetypes
 import os
+import re
+import socket
 import stat
 import urllib
 import urllib2
-import email.Utils
+
+addclosehook = urllib.addclosehook
+addinfourl = urllib.addinfourl
+splitattr = urllib.splitattr
+splitpasswd = urllib.splitpasswd
+splitport = urllib.splitport
+splituser = urllib.splituser
+unquote = urllib.unquote
 
 class RangeError(IOError):
     """Error raised when an unsatisfiable range is requested."""
     pass
@@ -195,10 +209,8 @@ class FileRangeHandler(urllib2.FileHandl
     This class handles Range headers exactly like an HTTP
     server would.
     """
     def open_local_file(self, req):
-        import mimetypes
-        import email
         host = req.get_host()
         file = req.get_selector()
         localfile = urllib.url2pathname(file)
         stats = os.stat(localfile)
@@ -233,15 +245,8 @@ class FileRangeHandler(urllib2.FileHandl
 # Code modifications for range support have been commented as
 # follows:
 # -- range support modifications start/end here
 
-from urllib import splitport, splituser, splitpasswd, splitattr, \
-                   unquote, addclosehook, addinfourl
-import ftplib
-import socket
-import mimetypes
-import email
-
 class FTPRangeHandler(urllib2.FTPHandler):
     def ftp_open(self, req):
         host = req.get_host()
         if not host:
@@ -405,9 +410,8 @@ def range_header_to_tuple(range_header):
     global _rangere
     if range_header is None:
         return None
     if _rangere is None:
-        import re
         _rangere = re.compile(r'^bytes=(\d{1,})-(\d*)')
     match = _rangere.match(range_header)
     if match:
         tup = range_tuple_normalize(match.group(1, 2))
diff --git a/tests/test-check-py3-compat.t b/tests/test-check-py3-compat.t
--- a/tests/test-check-py3-compat.t
+++ b/tests/test-check-py3-compat.t
@@ -97,9 +97,8 @@
   hgext/zeroconf/Zeroconf.py requires print_function
   hgext/zeroconf/__init__.py not using absolute_import
   i18n/check-translation.py not using absolute_import
   i18n/polib.py not using absolute_import
-  mercurial/byterange.py not using absolute_import
   mercurial/cmdutil.py not using absolute_import
   mercurial/commands.py not using absolute_import
   mercurial/context.py not using absolute_import
   mercurial/dispatch.py requires print_function