Make things more Python 3 friendly. Python 3 still doesn't work because

of C code that doesn't compile with Python 3.

setup.py

@@ -2,7 +2,6 @@
 import os
 import platform
 import re
-import string
 import struct
 import sys
 
@@ -159,8 +158,8 @@ def build_extensions(self):
                 TCL_ROOT = os.path.abspath(TCL_ROOT)
                 if os.path.isfile(os.path.join(TCL_ROOT, "include", "tk.h")):
                     # FIXME: use distutils logging (?)
-                    print "--- using Tcl/Tk libraries at", TCL_ROOT
-                    print "--- using Tcl/Tk version", TCL_VERSION
+                    print("--- using Tcl/Tk libraries at", TCL_ROOT)
+                    print("--- using Tcl/Tk version", TCL_VERSION)
                     TCL_ROOT = _lib_include(TCL_ROOT)
                     break
             else:
@@ -280,7 +279,7 @@ class feature:
             defs.append(("HAVE_LIBZ", None))
         if sys.platform == "win32":
             libs.extend(["kernel32", "user32", "gdi32"])
-        if struct.unpack("h", "\0\1")[0] == 1:
+        if struct.unpack("h", "\0\1".encode('ascii'))[0] == 1:
             defs.append(("WORDS_BIGENDIAN", None))
 
         exts = [(Extension(
@@ -317,7 +316,7 @@ class feature:
             for root in framework_roots:
                 if (os.path.exists(os.path.join(root, "Tcl.framework")) and
                     os.path.exists(os.path.join(root, "Tk.framework"))):
-                    print "--- using frameworks at", root
+                    print("--- using frameworks at", root)
                     frameworks = ["-framework", "Tcl", "-framework", "Tk"]
                     dir = os.path.join(root, "Tcl.framework", "Headers")
                     _add_directory(self.compiler.include_dirs, dir, 0)
@@ -353,15 +352,15 @@ class feature:
 
     def summary_report(self, feature, unsafe_zlib):
 
-        print "-" * 68
-        print "SETUP SUMMARY (Pillow", VERSION, "/ PIL %s)" % PIL_VERSION
-        print "-" * 68
-        print "version      ", VERSION
-        v = string.split(sys.version, "[")
-        print "platform     ", sys.platform, string.strip(v[0])
+        print("-" * 68)
+        print("SETUP SUMMARY (Pillow", VERSION, "/ PIL %s)" % PIL_VERSION)
+        print("-" * 68)
+        print("version      ", VERSION)
+        v = sys.version.split("[")
+        print("platform     ", sys.platform, v[0].strip())
         for v in v[1:]:
-            print "             ", string.strip("[" + v)
-        print "-" * 68
+            print("             ", ("[" + v).strip())
+        print("-" * 68)
 
         options = [
             (feature.tcl and feature.tk, "TKINTER"),
@@ -375,34 +374,34 @@ def summary_report(self, feature, unsafe_zlib):
         all = 1
         for option in options:
             if option[0]:
-                print "---", option[1], "support available"
+                print("---", option[1], "support available")
             else:
-                print "***", option[1], "support not available",
+                print("***", option[1], "support not available")
                 if option[1] == "TKINTER" and _tkinter:
                     version = _tkinter.TCL_VERSION
-                    print "(Tcl/Tk %s libraries needed)" % version,
-                print
+                    print("(Tcl/Tk %s libraries needed)" % version)
+                print()
                 all = 0
 
         if feature.zlib and unsafe_zlib:
-            print
-            print "*** Warning: zlib", unsafe_zlib,
-            print "may contain a security vulnerability."
-            print "*** Consider upgrading to zlib 1.2.3 or newer."
-            print "*** See: http://www.kb.cert.org/vuls/id/238678"
-            print " http://www.kb.cert.org/vuls/id/680620"
-            print " http://www.gzip.org/zlib/advisory-2002-03-11.txt"
-            print
+            print()
+            print("*** Warning: zlib", unsafe_zlib)
+            print("may contain a security vulnerability.")
+            print("*** Consider upgrading to zlib 1.2.3 or newer.")
+            print("*** See: http://www.kb.cert.org/vuls/id/238678")
+            print(" http://www.kb.cert.org/vuls/id/680620")
+            print(" http://www.gzip.org/zlib/advisory-2002-03-11.txt")
+            print()
 
-        print "-" * 68
+        print("-" * 68)
 
         if not all:
-            print "To add a missing option, make sure you have the required"
-            print "library, and set the corresponding ROOT variable in the"
-            print "setup.py script."
-            print
+            print("To add a missing option, make sure you have the required")
+            print("library, and set the corresponding ROOT variable in the")
+            print("setup.py script.")
+            print()
 
-        print "To check the build, run the selftest.py script."
+        print("To check the build, run the selftest.py script.")
 
     def check_zlib_version(self, include_dirs):
         # look for unsafe versions of zlib
@@ -450,10 +449,11 @@ def add_multiarch_paths(self):
     long_description=(
         _read('README.rst') +
         _read('docs/INSTALL.txt') +
-        _read('docs/HISTORY.txt')),
+        _read('docs/HISTORY.txt')).decode('utf-8'),
     author='Alex Clark (fork author)',
     author_email='aclark@aclark.net',
     url='http://github.com/collective/Pillow',
+    use_2to3=True,
     classifiers=[
         "Development Status :: 6 - Mature",
         "Topic :: Multimedia :: Graphics",

tox.ini

@@ -4,10 +4,19 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py25, py26, py27
+envlist = py25, py26, py27, py32, pypy
 
 [testenv]
 commands =
     {envpython} setup.py clean
+    rm -rf build dist
     {envpython} setup.py install
     {envpython} selftest.py
+
+[testenv:py32]
+commands =
+    {envpython} setup.py clean
+    rm -rf build dist
+    {envpython} setup.py install
+    2to3 -w -n -o . --add-suffix=3 selftest.py
+    {envpython} selftest.py3