diff --git a/virtualenv.py b/virtualenv.py

index 9854324..e5d0883 100755

--- a/virtualenv.py

+++ b/virtualenv.py

@@ -49,7 +49,8 @@ try:

 except NameError:

     basestring = str

-py_version = 'python%s.%s' % (sys.version_info[0], sys.version_info[1])

+version = '%s.%s' % (sys.version_info[0], sys.version_info[1])

+py_version = 'python%s' % version

 is_jython = sys.platform.startswith('java')

 is_pypy = hasattr(sys, 'pypy_version_info')

@@ -1012,13 +1013,13 @@ def change_prefix(filename, dst_prefix):

     if is_darwin:

         prefixes.extend((

-            os.path.join("/Library/Python", sys.version[:3], "site-packages"),

+            os.path.join("/Library/Python", version, "site-packages"),

             os.path.join(sys.prefix, "Extras", "lib", "python"),

-            os.path.join("~", "Library", "Python", sys.version[:3], "site-packages"),

+            os.path.join("~", "Library", "Python", version, "site-packages"),

             # Python 2.6 no-frameworks

-            os.path.join("~", ".local", "lib","python", sys.version[:3], "site-packages"),

+            os.path.join("~", ".local", "lib","python", version, "site-packages"),

             # System Python 2.7 on OSX Mountain Lion

-            os.path.join("~", "Library", "Python", sys.version[:3], "lib", "python", "site-packages")))

+            os.path.join("~", "Library", "Python", version, "lib", "python", "site-packages")))

     if hasattr(sys, 'real_prefix'):

         prefixes.append(sys.real_prefix)

@@ -1099,7 +1100,7 @@ def copy_required_modules(dst_prefix, symlink):

             # special-case custom readline.so on OS X, but not for pypy:

             if modname == 'readline' and sys.platform == 'darwin' and not (

                     is_pypy or filename.endswith(join('lib-dynload', 'readline.so'))):

-                dst_filename = join(dst_prefix, 'lib', 'python%s' % sys.version[:3], 'readline.so')

+                dst_filename = join(dst_prefix, 'lib', py_version, 'readline.so')

             elif modname == 'readline' and sys.platform == 'win32':

                 # special-case for Windows, where readline is not a

                 # standard module, though it may have been installed in

@@ -1398,8 +1399,7 @@ def install_python(home_dir, lib_dir, inc_dir, bin_dir, site_packages, clear, sy

     if not is_win:

         # Ensure that 'python', 'pythonX' and 'pythonX.Y' all exist

         py_exe_version_major = 'python%s' % sys.version_info[0]

-        py_exe_version_major_minor = 'python%s.%s' % (

-            sys.version_info[0], sys.version_info[1])

+        py_exe_version_major_minor = py_version

         py_exe_no_version = 'python'

         required_symlinks = [ py_exe_no_version, py_exe_version_major,

                          py_exe_version_major_minor ]

@@ -1547,7 +1547,8 @@ def fix_local_scheme(home_dir, symlink=True):

     except ImportError:

         pass

     else:

-        if sysconfig._get_default_scheme() == 'posix_local':

+        get_scheme = getattr(sysconfig, 'get_default_scheme', None) or sysconfig._get_default_scheme

+        if get_scheme() == 'posix_local':

             local_path = os.path.join(home_dir, 'local')

             if not os.path.exists(local_path):

                 os.mkdir(local_path)

@@ -1575,7 +1576,7 @@ def fix_lib64(lib_dir, symlink=True):

     logger.debug('This system uses lib64; symlinking lib64 to lib')

-    assert os.path.basename(lib_dir) == 'python%s' % sys.version[:3], (

+    assert os.path.basename(lib_dir) == py_version, (

         "Unexpected python lib dir: %r" % lib_dir)

     lib_parent = os.path.dirname(lib_dir)

     top_level = os.path.dirname(lib_parent)

@@ -1637,7 +1638,7 @@ def make_environment_relocatable(home_dir):

     fixup_pth_and_egg_link(home_dir)

     ## FIXME: need to fix up distutils.cfg

-OK_ABS_SCRIPTS = ['python', 'python%s' % sys.version[:3],

+OK_ABS_SCRIPTS = ['python', py_version,

                   'activate', 'activate.bat', 'activate_this.py',

                   'activate.fish', 'activate.csh']

@@ -1647,7 +1648,7 @@ def fixup_scripts(home_dir, bin_dir):

             '%s /c' % os.path.normcase(os.environ.get('COMSPEC', 'cmd.exe')),

             '', '.exe')

     else:

-        new_shebang_args = ('/usr/bin/env', sys.version[:3], '')

+        new_shebang_args = ('/usr/bin/env', version, '')

     # This is what we expect at the top of scripts:

     shebang = '#!%s' % os.path.normcase(os.path.join(

diff --git a/virtualenv_embedded/activate_this.py b/virtualenv_embedded/activate_this.py

index f18193b..8272888 100644

--- a/virtualenv_embedded/activate_this.py

+++ b/virtualenv_embedded/activate_this.py

@@ -19,7 +19,7 @@ base = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

 if sys.platform == 'win32':

     site_packages = os.path.join(base, 'Lib', 'site-packages')

 else:

-    site_packages = os.path.join(base, 'lib', 'python%s' % sys.version[:3], 'site-packages')

+    site_packages = os.path.join(base, 'lib', 'python%s.%s' % (sys.version_info[0], sys.version_info[1]), 'site-packages')

 prev_sys_path = list(sys.path)

 import site

 site.addsitedir(site_packages)

diff --git a/virtualenv_embedded/site.py b/virtualenv_embedded/site.py

index 7969769..b3603ff 100644

--- a/virtualenv_embedded/site.py

+++ b/virtualenv_embedded/site.py

@@ -134,7 +134,7 @@ def addbuilddir():

     """Append ./build/lib.<platform> in case we're running in the build dir

     (especially for Guido :-)"""

     from distutils.util import get_platform

-    s = "build/lib.%s-%.3s" % (get_platform(), sys.version)

+    s = "build/lib.%s-%s.%s" % (get_platform(), sys.version_info[0], sys.version_info[1])

     if hasattr(sys, 'gettotalrefcount'):

         s += '-pydebug'

     s = os.path.join(os.path.dirname(sys.path[-1]), s)

@@ -162,7 +162,7 @@ def addpackage(sitedir, name, known_paths):

         reset = 0

     fullname = os.path.join(sitedir, name)

     try:

-        f = open(fullname, "rU")

+        f = open(fullname, "r")

     except IOError:

         return

     try:

@@ -222,21 +222,21 @@ def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_pre

                 if prefix.startswith("/System/Library/Frameworks/"): # Apple's Python

-                    sitedirs = [os.path.join("/Library/Python", sys.version[:3], "site-packages"),

+                    sitedirs = [os.path.join("/Library/Python", "%s.%s" % (sys.version_info[0], sys.version_info[1]), "site-packages"),

                                 os.path.join(prefix, "Extras", "lib", "python")]

                 else: # any other Python distros on OSX work this way

                     sitedirs = [os.path.join(prefix, "lib",

-                                             "python" + sys.version[:3], "site-packages")]

+                                             "python" + "%s.%s" % (sys.version_info[0], sys.version_info[1]), "site-packages")]

             elif os.sep == '/':

                 sitedirs = [os.path.join(prefix,

                                          "lib",

-                                         "python" + sys.version[:3],

+                                         "python%s.%s" % (sys.version_info[0], sys.version_info[1]),

                                          "site-packages"),

                             os.path.join(prefix, "lib", "site-python"),

-                            os.path.join(prefix, "python" + sys.version[:3], "lib-dynload")]

-                lib64_dir = os.path.join(prefix, "lib64", "python" + sys.version[:3], "site-packages")

+                            os.path.join(prefix, "python%s.%s" % (sys.version_info[0], sys.version_info[1]), "lib-dynload")]

+                lib64_dir = os.path.join(prefix, "lib64", "python%s.%s" % (sys.version_info[0], sys.version_info[1]), "site-packages")

                 if (os.path.exists(lib64_dir) and

                     os.path.realpath(lib64_dir) not in [os.path.realpath(p) for p in sitedirs]):

                     if _is_64bit:

@@ -251,11 +251,11 @@ def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_pre

                     pass

                 # Debian-specific dist-packages directories:

                 sitedirs.append(os.path.join(prefix, "local/lib",

-                                             "python" + sys.version[:3],

+                                             "python%s.%s" % (sys.version_info[0], sys.version_info[1]),

                                              "dist-packages"))

                 if sys.version[0] == '2':

                     sitedirs.append(os.path.join(prefix, "lib",

-                                                 "python" + sys.version[:3],

+                                                 "python%s.%s" % (sys.version_info[0], sys.version_info[1]),

                                                  "dist-packages"))

                 else:

                     sitedirs.append(os.path.join(prefix, "lib",

@@ -275,7 +275,7 @@ def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_pre

                             os.path.join(home,

                                          'Library',

                                          'Python',

-                                         sys.version[:3],

+                                         '%s.%s' % (sys.version_info[0], sys.version_info[1]),

                                          'site-packages'))

             for sitedir in sitedirs:

                 if os.path.isdir(sitedir):

@@ -335,7 +335,7 @@ def addusersitepackages(known_paths):

         else:

             USER_BASE = joinuser(base, "Python")

         USER_SITE = os.path.join(USER_BASE,

-                                 "Python" + sys.version[0] + sys.version[2],

+                                 "Python%s%s" % (sys.version_info[0], sys.version_info[1]),

                                  "site-packages")

     else:

         if env_base:

@@ -343,7 +343,7 @@ def addusersitepackages(known_paths):

         else:

             USER_BASE = joinuser("~", ".local")

         USER_SITE = os.path.join(USER_BASE, "lib",

-                                 "python" + sys.version[:3],

+                                 "python%s.%s" % (sys.version_info[0], sys.version_info[1]),

                                  "site-packages")

     if ENABLE_USER_SITE and os.path.isdir(USER_SITE):

@@ -351,7 +351,7 @@ def addusersitepackages(known_paths):

     if ENABLE_USER_SITE:

         for dist_libdir in ("lib", "local/lib"):

             user_site = os.path.join(USER_BASE, dist_libdir,

-                                     "python" + sys.version[:3],

+                                     "python%s.%s" % (sys.version_info[0], sys.version_info[1]),

                                      "dist-packages")

             if os.path.isdir(user_site):

                 addsitedir(user_site, known_paths)

@@ -426,7 +426,7 @@ class _Printer(object):

             for filename in self.__files:

                 filename = os.path.join(dir, filename)

                 try:

-                    fp = open(filename, "rU")

+                    fp = open(filename, "r")

                     data = fp.read()

                     fp.close()

                     break

@@ -581,9 +581,9 @@ def virtual_install_main_packages():

     elif sys.platform == 'win32':

         paths = [os.path.join(sys.real_prefix, 'Lib'), os.path.join(sys.real_prefix, 'DLLs')]

     else:

-        paths = [os.path.join(sys.real_prefix, 'lib', 'python'+sys.version[:3])]

+        paths = [os.path.join(sys.real_prefix, 'lib', 'python%s.%s' % (sys.version_info[0], sys.version_info[1]))]

         hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below

-        lib64_path = os.path.join(sys.real_prefix, 'lib64', 'python'+sys.version[:3])

+        lib64_path = os.path.join(sys.real_prefix, 'lib64', 'python%s.%s' % (sys.version_info[0], sys.version_info[1]))

         if os.path.exists(lib64_path):

             if _is_64bit:

                 paths.insert(0, lib64_path)

@@ -600,7 +600,7 @@ def virtual_install_main_packages():

             # This is a non-multiarch aware Python.  Fallback to the old way.

             arch = sys.platform

         plat_path = os.path.join(sys.real_prefix, 'lib',

-                                 'python'+sys.version[:3],

+                                 'python%s.%s' % (sys.version_info[0], sys.version_info[1]),

                                  'plat-%s' % arch)

         if os.path.exists(plat_path):

             paths.append(plat_path)