Python 3 compatibility. First step towards Python 3 support. Still un…

…stable.

Needs more testing:
  * see internal console for issues with module_completion
  * try to open Preferences dialog box (it crashes Spyder on Windows)
  * ...

clonebuild.py

@@ -18,6 +18,7 @@
 import sys
 
 import spyderlib as mod
+from spyderlib.py3compat import getcwd
 
 name = 'spyder'
 version = mod.__version__
@@ -60,7 +61,7 @@ def extract_exe_dist(plugin_dir, exe_dist):
 
 def include_chm_doc(plugin_dir):
     """Build and replace Spyder's html doc by .chm doc"""
-    curdir = os.getcwdu()
+    curdir = getcwd()
     os.chdir(osp.dirname(__file__))
     os.system('sphinx-build -b htmlhelp doc doctmp')
     for hhc_exe in (r'C:\Program Files\HTML Help Workshop\hhc.exe',
@@ -112,7 +113,7 @@ def build_pythonxy_plugin(plugin_dir, plugin_version):
 
 def get_pythonxy_plugindir(name):
     """Searching Python(x,y) plugin directory in current working directory"""
-    for fname in os.listdir(os.getcwdu()):
+    for fname in os.listdir(getcwd()):
         path = osp.abspath(osp.join(fname, 'src', 'python', name))
         if osp.isdir(path):
             # Also create the binary directory if it does not exist yet:

create_app.py

@@ -12,6 +12,8 @@
 $ python create_app.py py2app   (to build the app)
 """
 
+from __future__ import print_function
+
 from setuptools import setup
 
 from distutils.sysconfig import get_python_lib
@@ -142,9 +144,9 @@ def get_stdlib_modules():
 pep8_script = osp.join(app_python_lib, pep8_egg, 'pep8.py')
 for line in fileinput.input(pep8_script, inplace=True):
     if line.strip().startswith('codes = ERRORCODE_REGEX.findall'):
-        print "            codes = ERRORCODE_REGEX.findall(function.__doc__ or 'W000')"
+        print("            codes = ERRORCODE_REGEX.findall(function.__doc__ or 'W000')")
     else:
-        print line,
+        print(line),
 
 # Function to adjust the interpreter used by PROGRAMS
 # (to be added to __boot.py__)
@@ -218,13 +220,13 @@ def _get_env():
 run_line = "_run()"
 for line in fileinput.input(boot_file, inplace=True):
     if line.startswith(reset_line):
-        print reset_line
-        print get_env
+        print(reset_line)
+        print(get_env)
     elif line.startswith(run_line):
-        print change_interpreter
-        print new_path
-        print ip_dir
-        print run_line
+        print(change_interpreter)
+        print(new_path)
+        print(ip_dir)
+        print(run_line)
     else:
-        print line,
+        print(line, end='')
 

create_exe.py

@@ -27,7 +27,7 @@ def create_executable():
     except ImportError:
         python_qt = 'pyside'
     dist.setup(name="Spyder", version=ver, script="spyderlib/spyder.py",
-               description=u"Scientific PYthon Development EnviRonment",
+               description="Scientific PYthon Development EnviRonment",
                target_name="%s.exe" % name, icon="%s.ico" % name,
                target_dir="%s-win32-%s-sa-%s" % (name, python_qt, ver))
     spyderlib.add_to_distribution(dist)

doc/conf.py

@@ -37,17 +37,17 @@
 master_doc = 'index'
 
 # General information about the project.
-project = u'Spyder'
-copyright = u'2009-2013, Pierre Raybaut'
+project = 'Spyder'
+copyright = '2009, Pierre Raybaut'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '2.2'
+version = '2.3'
 # The full version, including alpha/beta/rc tags.
-release = '2.2'
+release = '2.3'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -173,8 +173,7 @@
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass [howto/manual]).
 latex_documents = [
-  ('index', 'Spyder.tex', u'Spyder Documentation',
-   u'Pierre Raybaut', 'manual'),
+  ('index', 'Spyder.tex', 'Spyder Documentation', 'Pierre Raybaut', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of