Fix use of getheaders on Python 3

setuptools.egg-info/entry_points.txt

-[distutils.commands]
-bdist_rpm = setuptools.command.bdist_rpm:bdist_rpm
-rotate = setuptools.command.rotate:rotate
-develop = setuptools.command.develop:develop
-setopt = setuptools.command.setopt:setopt
-build_py = setuptools.command.build_py:build_py
-saveopts = setuptools.command.saveopts:saveopts
-egg_info = setuptools.command.egg_info:egg_info
-register = setuptools.command.register:register
-upload_docs = setuptools.command.upload_docs:upload_docs
-install_egg_info = setuptools.command.install_egg_info:install_egg_info
-alias = setuptools.command.alias:alias
-easy_install = setuptools.command.easy_install:easy_install
-install_scripts = setuptools.command.install_scripts:install_scripts
-bdist_wininst = setuptools.command.bdist_wininst:bdist_wininst
-bdist_egg = setuptools.command.bdist_egg:bdist_egg
-install = setuptools.command.install:install
-test = setuptools.command.test:test
-install_lib = setuptools.command.install_lib:install_lib
-build_ext = setuptools.command.build_ext:build_ext
-sdist = setuptools.command.sdist:sdist
-
-[egg_info.writers]
-dependency_links.txt = setuptools.command.egg_info:overwrite_arg
-requires.txt = setuptools.command.egg_info:write_requirements
-PKG-INFO = setuptools.command.egg_info:write_pkg_info
-eager_resources.txt = setuptools.command.egg_info:overwrite_arg
-top_level.txt = setuptools.command.egg_info:write_toplevel_names
-namespace_packages.txt = setuptools.command.egg_info:overwrite_arg
-entry_points.txt = setuptools.command.egg_info:write_entries
-depends.txt = setuptools.command.egg_info:warn_depends_obsolete
-
-[console_scripts]
-easy_install = setuptools.command.easy_install:main
-easy_install-2.7 = setuptools.command.easy_install:main
-
-[setuptools.file_finders]
-svn_cvs = setuptools.command.sdist:_default_revctrl
-
-[distutils.setup_keywords]
-dependency_links = setuptools.dist:assert_string_list
-entry_points = setuptools.dist:check_entry_points
-extras_require = setuptools.dist:check_extras
-use_2to3_exclude_fixers = setuptools.dist:assert_string_list
-package_data = setuptools.dist:check_package_data
-install_requires = setuptools.dist:check_requirements
-use_2to3 = setuptools.dist:assert_bool
-use_2to3_fixers = setuptools.dist:assert_string_list
-include_package_data = setuptools.dist:assert_bool
-exclude_package_data = setuptools.dist:check_package_data
-namespace_packages = setuptools.dist:check_nsp
-test_suite = setuptools.dist:check_test_suite
-eager_resources = setuptools.dist:assert_string_list
-zip_safe = setuptools.dist:assert_bool
-test_loader = setuptools.dist:check_importable
-packages = setuptools.dist:check_packages
-convert_2to3_doctests = setuptools.dist:assert_string_list
-tests_require = setuptools.dist:check_requirements
-
-[setuptools.installation]
-eggsecutable = setuptools.command.easy_install:bootstrap
-
+[distutils.commands]
+bdist_rpm = setuptools.command.bdist_rpm:bdist_rpm
+rotate = setuptools.command.rotate:rotate
+develop = setuptools.command.develop:develop
+setopt = setuptools.command.setopt:setopt
+build_py = setuptools.command.build_py:build_py
+saveopts = setuptools.command.saveopts:saveopts
+egg_info = setuptools.command.egg_info:egg_info
+register = setuptools.command.register:register
+upload_docs = setuptools.command.upload_docs:upload_docs
+install_egg_info = setuptools.command.install_egg_info:install_egg_info
+alias = setuptools.command.alias:alias
+easy_install = setuptools.command.easy_install:easy_install
+install_scripts = setuptools.command.install_scripts:install_scripts
+bdist_wininst = setuptools.command.bdist_wininst:bdist_wininst
+bdist_egg = setuptools.command.bdist_egg:bdist_egg
+install = setuptools.command.install:install
+test = setuptools.command.test:test
+install_lib = setuptools.command.install_lib:install_lib
+build_ext = setuptools.command.build_ext:build_ext
+sdist = setuptools.command.sdist:sdist
+
+[egg_info.writers]
+dependency_links.txt = setuptools.command.egg_info:overwrite_arg
+requires.txt = setuptools.command.egg_info:write_requirements
+PKG-INFO = setuptools.command.egg_info:write_pkg_info
+eager_resources.txt = setuptools.command.egg_info:overwrite_arg
+top_level.txt = setuptools.command.egg_info:write_toplevel_names
+namespace_packages.txt = setuptools.command.egg_info:overwrite_arg
+entry_points.txt = setuptools.command.egg_info:write_entries
+depends.txt = setuptools.command.egg_info:warn_depends_obsolete
+
+[console_scripts]
+easy_install = setuptools.command.easy_install:main
+easy_install-2.7 = setuptools.command.easy_install:main
+
+[setuptools.file_finders]
+svn_cvs = setuptools.command.sdist:_default_revctrl
+
+[distutils.setup_keywords]
+dependency_links = setuptools.dist:assert_string_list
+entry_points = setuptools.dist:check_entry_points
+extras_require = setuptools.dist:check_extras
+use_2to3_exclude_fixers = setuptools.dist:assert_string_list
+package_data = setuptools.dist:check_package_data
+install_requires = setuptools.dist:check_requirements
+use_2to3 = setuptools.dist:assert_bool
+use_2to3_fixers = setuptools.dist:assert_string_list
+include_package_data = setuptools.dist:assert_bool
+exclude_package_data = setuptools.dist:check_package_data
+namespace_packages = setuptools.dist:check_nsp
+test_suite = setuptools.dist:check_test_suite
+eager_resources = setuptools.dist:assert_string_list
+zip_safe = setuptools.dist:assert_bool
+test_loader = setuptools.dist:check_importable
+packages = setuptools.dist:check_packages
+convert_2to3_doctests = setuptools.dist:assert_string_list
+tests_require = setuptools.dist:check_requirements
+
+[setuptools.installation]
+eggsecutable = setuptools.command.easy_install:bootstrap
+

setuptools/package_index.py

@@ -13,6 +13,7 @@ except ImportError:
     from md5 import md5
 from fnmatch import translate
 from .py24compat import wraps
+from setuptools.py27compat import get_all_headers
 
 EGG_FRAGMENT = re.compile(r'^egg=([-A-Za-z0-9_.]+)$')
 HREF = re.compile("""href\\s*=\\s*['"]?([^'"> ]+)""", re.I)
@@ -608,10 +609,8 @@ class PackageIndex(Environment):
             size = -1
             if "content-length" in headers:
                 # Some servers return multiple Content-Length headers :(
-                if not hasattr(headers, 'get_all'):
-                    # Older versions of Python don't have the get_all method
-                    headers.get_all = headers.getheaders
-                size = max(map(int,headers.get_all("Content-Length")))
+                sizes = get_all_headers(headers, 'Content-Length')
+                size = max(map(int, sizes))
                 self.reporthook(url, filename, blocknum, bs, size)
             tfp = open(filename,'wb')
             while True:

setuptools/py27compat.py

+"""
+Compatibility Support for Python 2.7 and earlier
+"""
+
+import sys
+
+def get_all_headers(message, key):
+	"""
+	Given an HTTPMessage, return all headers matching a given key.
+	"""
+	return message.get_all(key)
+
+if sys.version_info < (3,):
+	def get_all_headers(message, key):
+		return message.getheaders(key)