Fix python3 compatibility issue

This change fix python3 compatibility:
* replace except obj, name with except obj as name
* use print function
* replace iteritems by six.iteritems
* replace xrange by range
* convert items() result to list

Change-Id: I70364e47541274d446c4449f820dce3e0b331b27

.zuul.yaml

@@ -3,8 +3,9 @@
       jobs:
         - tox-pep8
         - tox-py27
+        - tox-py36
     gate:
       jobs:
         - tox-pep8
         - tox-py27
-
+        - tox-py36

lodgeit/application.py

@@ -64,7 +64,7 @@ class LodgeIt(object):
         except NotFound:
             handler = get_controller('static/not_found')
             resp = handler()
-        except HTTPException, e:
+        except HTTPException as e:
             resp = e.get_response(environ)
         else:
             expires = datetime.utcnow() + timedelta(days=31)

lodgeit/database.py

@@ -8,6 +8,7 @@
     :copyright: 2007-2010 by Armin Ronacher, Christopher Grebs.
     :license: BSD
 """
+import six
 import sys
 from types import ModuleType
 import sqlalchemy
@@ -46,7 +47,7 @@ ModelBase.query = session.query_property()
 def _make_module():
     db = ModuleType('db')
     for mod in sqlalchemy, orm:
-        for key, value in mod.__dict__.iteritems():
+        for key, value in six.iteritems(mod.__dict__):
             if key in mod.__all__:
                 setattr(db, key, value)
 

lodgeit/i18n/__init__.py

@@ -11,6 +11,7 @@
 import os
 from babel import Locale, dates, UnknownLocaleError
 from babel.support import Translations
+from six import text_type
 
 from lodgeit import local
 
@@ -65,7 +66,7 @@ def list_languages():
             continue
         try:
             locale = Locale.parse(filename)
-        except UnknownLocaleError:
+        except (UnknownLocaleError, ValueError):
             continue
         languages.append((str(locale), locale.display_name))
 
@@ -109,7 +110,7 @@ class _TranslationProxy(object):
         return bool(self.value)
 
     def __dir__(self):
-        return dir(unicode)
+        return dir(text_type)
 
     def __iter__(self):
         return iter(self.value)
@@ -121,7 +122,7 @@ class _TranslationProxy(object):
         return str(self.value)
 
     def __unicode__(self):
-        return unicode(self.value)
+        return text_type(self.value)
 
     def __add__(self, other):
         return self.value + other
@@ -169,7 +170,7 @@ class _TranslationProxy(object):
 
     def __repr__(self):
         try:
-            return 'i' + repr(unicode(self.value))
+            return 'i' + repr(text_type(self.value))
         except ValueError:
             return '<%s broken>' % self.__class__.__name__
 

lodgeit/lib/captcha.py

@@ -24,6 +24,11 @@ try:
 except ImportError:
     from sha import new as sha1
 
+try:
+    xrange
+except NameError:
+    xrange = range
+
 resource_path = abspath(join(dirname(__file__), pardir, 'res'))
 
 

lodgeit/lib/filterable.py

@@ -8,6 +8,8 @@
     :copyright: 2008 by Christopher Grebs.
     :license: BSD.
 """
+import six
+
 from lodgeit.i18n import _
 from lodgeit.utils import render_template
 
@@ -71,7 +73,7 @@ class Filterable(object):
         return ret
 
     def get_objects(self):
-        for field, filter in self.filters.iteritems():
+        for field, filter in six.iteritems(self.filters):
             action, value = filter
             if value:
                 func = ACTIONS_MAP[action]

lodgeit/lib/highlighting.py

@@ -9,6 +9,7 @@
     :license: BSD
 """
 import re
+import six
 import pygments
 import csv
 from operator import itemgetter
@@ -195,7 +196,7 @@ def get_style(request=None, name_only=False):
     request = request or local.request
     if not request:
         style_name = DEFAULT_STYLE
-    elif isinstance(request, basestring):
+    elif isinstance(request, six.string_types):
         style_name = request
     else:
         style_name = request.cookies.get('style')
@@ -251,6 +252,6 @@ def get_known_alias(lexer, default='text'):
 
 def list_languages():
     """List all languages."""
-    languages = LANGUAGES.items()
+    languages = list(LANGUAGES.items())
     languages.sort(key=lambda x: x[1].lstrip(' _-.').lower())
     return languages

lodgeit/lib/json.py

@@ -42,7 +42,7 @@ class JSONRequestHandler(object):
                 'data':     self.funcs[method_name](*args, **kwargs),
                 'error':    None
             }
-        except Exception, e:
+        except Exception as e:
             response = {'data': None, 'error': str(e).decode('utf-8')}
         body = dumps(response, indent=local.request.is_xhr and 2 or 0)
         return Response(body + '\n', mimetype='application/json')

lodgeit/lib/webapi.py

@@ -9,6 +9,7 @@
     :license: BSD.
 """
 import inspect
+import six
 from lodgeit.models import Paste
 from lodgeit.database import db
 from lodgeit.lib.xmlrpc import XMLRPCRequestHandler
@@ -39,7 +40,7 @@ def get_public_methods():
     global _public_methods
     if _public_methods is None:
         result = []
-        for name, f in json.funcs.iteritems():
+        for name, f in six.iteritems(json.funcs):
             if name.startswith('system.') or f.hidden:
                 continue
             args, varargs, varkw, defaults = inspect.getargspec(f)
@@ -130,14 +131,14 @@ def pastes_get_last():
 def pastes_get_languages():
     """Get a list of supported languages."""
     # this resolves lazy translations
-    return dict((key, unicode(value)) for
+    return dict((key, six.text_type(value)) for
-                key, value in LANGUAGES.iteritems())
+                key, value in six.iteritems(LANGUAGES))
 
 
 @exported('styles.getStyles')
 def styles_get_styles():
     """Get a list of supported styles."""
-    return STYLES.items()
+    return list(STYLES.items())
 
 
 @exported('styles.getStylesheet')

lodgeit/lib/xmlrpc.py

@@ -10,7 +10,10 @@
 """
 import sys
 import re
-from SimpleXMLRPCServer import SimpleXMLRPCDispatcher
+try:
+    from SimpleXMLRPCServer import SimpleXMLRPCDispatcher
+except ImportError:
+    from xmlrpc.server import SimpleXMLRPCDispatcher
 from werkzeug import Response
 from lodgeit import local
 

lodgeit/models.py

@@ -11,6 +11,7 @@
 import time
 import difflib
 from datetime import datetime
+from six import string_types
 from werkzeug import cached_property
 
 from lodgeit import local
@@ -56,7 +57,7 @@ class Paste(db.Model):
         """Return the paste for an identifier.  Private pastes must be loaded
         with their unique hash and public with the paste id.
         """
-        if isinstance(identifier, basestring) and not identifier.isdigit():
+        if isinstance(identifier, string_types) and not identifier.isdigit():
             query = Paste.query.filter_by(private_id=identifier)
         else:
             query = Paste.query.filter_by(paste_id=int(identifier))

lodgeit/utils.py

@@ -8,6 +8,7 @@
     :copyright: 2007-2008 by Christopher Grebs.
     :license: BSD
 """
+import base64
 import re
 import time
 from os import path
@@ -49,14 +50,16 @@ jinja_environment.globals['url_for'] = url_for
 
 def generate_user_hash():
     """Generates an more or less unique SHA1 hash."""
-    return sha1('%s|%s' % (random(), time.time())).hexdigest()
+    hash_base = '%s|%s' % (random(), time.time())
+    return sha1(hash_base.encode()).hexdigest()
 
 
 def generate_paste_hash():
     """Generates a more or less unique-truncated SHA1 hash."""
     while 1:
-        digest = sha1('%s|%s' % (random(), time.time())).digest()
+        hash_base = '%s|%s' % (random(), time.time())
-        val = _word_only(digest.encode('base64').strip())[:20]
+        digest = sha1(hash_base.encode()).digest()
+        val = _word_only(str(base64.b64encode(digest)).strip())[:20]
         # sanity check.  number only not allowed (though unlikely)
         if not val.isdigit():
             return val

lodgeit/views/help/api.html

@@ -24,7 +24,7 @@
   </p>
 <pre class="sample">{% filter escape %}
 >>> paste = s.pastes.getPaste(23)
->>> print paste['code']
+>>> print(paste['code'])
 '{{ "{% if users %}" }}\n...'
 {% endfilter %}</pre>
   <h3>{% trans %}JSON Quickstart{% endtrans %}</h3>

requirements.txt

@@ -1,3 +1,4 @@
+six
 Jinja2
 Werkzeug<0.16
 Pygments

scripts/lodgeit.py

@@ -22,8 +22,10 @@
               2006 Matt Good <matt@matt-good.net>,
               2005 Raphael Slinckx <raphael@slinckx.net>
 """
+from __future__ import print_function
 import os
 import sys
+from six import text_type
 from optparse import OptionParser
 
 
@@ -39,7 +41,7 @@ _server_name = None
 
 def fail(msg, code):
     """Bail out with an error message."""
-    print >> sys.stderr, 'ERROR: %s' % msg
+    print('ERROR: %s' % msg, file=sys.stderr)
     sys.exit(code)
 
 
@@ -83,14 +85,14 @@ def load_default_settings():
 def make_utf8(text, encoding):
     """Convert a text to UTF-8, brute-force."""
     try:
-        u = unicode(text, 'utf-8')
+        u = text_type(text, 'utf-8')
         uenc = 'utf-8'
     except UnicodeError:
         try:
-            u = unicode(text, encoding)
+            u = text_type(text, encoding)
             uenc = 'utf-8'
         except UnicodeError:
-            u = unicode(text, 'iso-8859-15', 'ignore')
+            u = text_type(text, 'iso-8859-15', 'ignore')
             uenc = 'iso-8859-15'
     try:
         import chardet
@@ -99,7 +101,7 @@ def make_utf8(text, encoding):
     d = chardet.detect(text)
     if d['encoding'] == uenc:
         return u.encode('utf-8')
-    return unicode(text, d['encoding'], 'ignore').encode('utf-8')
+    return text_type(text, d['encoding'], 'ignore').encode('utf-8')
 
 
 def get_xmlrpc_service():
@@ -110,7 +112,7 @@ def get_xmlrpc_service():
         try:
             _xmlrpc_service = xmlrpclib.ServerProxy(_server_name + 'xmlrpc/',
                                                     allow_none=True)
-        except Exception, err:
+        except Exception as err:
             fail('Could not connect to Pastebin: %s' % err, -1)
     return _xmlrpc_service
 
@@ -184,10 +186,12 @@ def print_languages():
     """Print a list of all supported languages, with description."""
     xmlrpc = get_xmlrpc_service()
     languages = xmlrpc.pastes.getLanguages().items()
-    languages.sort(lambda a, b: cmp(a[1].lower(), b[1].lower()))
+    languages.sort(
-    print 'Supported Languages:'
+        lambda a, b: (a[1].lower() > b[1].lower())-(a[1].lower() < b[1].lower())
+    )
+    print('Supported Languages:')
     for alias, name in languages:
-        print '    %-30s%s' % (alias, name)
+        print('    %-30s%s' % (alias, name))
 
 
 def download_paste(uid):
@@ -196,7 +200,7 @@ def download_paste(uid):
     paste = xmlrpc.pastes.getPaste(uid)
     if not paste:
         fail('Paste "%s" does not exist.' % uid, 5)
-    print paste['code'].encode('utf-8')
+    print(paste['code'].encode('utf-8'))
 
 
 def create_paste(code, language, filename, mimetype, private):
@@ -221,7 +225,7 @@ def compile_paste(filenames, langopt):
     lang = langopt or ''
     if not filenames:
         data = read_file(sys.stdin)
-        print 'Pasting...'
+        print('Pasting...')
         if not langopt:
             mime = get_mimetype(data, '') or ''
         fname = ''
@@ -292,7 +296,7 @@ def main():
     # special modes of operation:
     # - paste script version
     if opts.version:
-        print '%s: version %s' % (SCRIPT_NAME, VERSION)
+        print('%s: version %s' % (SCRIPT_NAME, VERSION))
         sys.exit()
     # - print list of languages
     elif opts.languages:
@@ -310,7 +314,7 @@ def main():
     # load file(s)
     try:
         data, language, filename, mimetype = compile_paste(args, opts.language)
-    except Exception, err:
+    except Exception as err:
         fail('Error while reading the file(s): %s' % err, 2)
     if not data:
         fail('Aborted, no content to paste.', 4)
@@ -319,7 +323,7 @@ def main():
     code = make_utf8(data, opts.encoding)
     pid = create_paste(code, language, filename, mimetype, opts.private)
     url = '%sshow/%s/' % (_server_name, pid)
-    print url
+    print(url)
     if opts.open_browser:
         open_webbrowser(url)
     if opts.clipboard:

scripts/make-bootstrap.py

@@ -6,6 +6,7 @@
 
     Creates a bootstrap script for LodgeIt
 """
+from __future__ import print_function
 from virtualenv import create_bootstrap_script
 
 
@@ -33,4 +34,4 @@ def easy_install(package, home_dir, optional_args=None):
 """
 
 if __name__ == '__main__':
-    print create_bootstrap_script(EXTRA_TEXT)
+    print(create_bootstrap_script(EXTRA_TEXT))

tests/unittest/test_api.py

@@ -59,7 +59,7 @@ def test_json_get_recent():
         return resp
 
     paste_ids = []
-    for x in xrange(10):
+    for x in range(10):
         resp = run(x)
         paste_ids.append(int(json(resp)['data']))
 

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = pep8, py27
+envlist = pep8, py27, py36
 skipsdist = True
 
 [testenv]
@@ -10,7 +10,6 @@ deps = -r{toxinidir}/requirements.txt
 commands = nosetests
 
 [testenv:pep8]
-basepython = python2
 commands = flake8
 
 [flake8]