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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"Special module to handle differences between Python 2 and 3 versions"
import sys
PY3K = sys.version_info >= (3, 0)
try:
import cPickle as pickle
except ImportError:
import pickle
try:
from urllib import urlopen
except ImportError:
from urllib.request import urlopen
try:
from hashlib import md5
except ImportError:
try:
from md5 import md5
except ImportError:
md5 = None
def hashpath(fn):
h = md5()
if PY3K:
h.update(fn.encode("UTF-8"))
else:
h.update(fn)
return h.hexdigest()
# Check if PIL is available (tries importing both pypi version and corrected or manually installed versions).
# Necessary for JPEG and GIF support.
# TODO: Pillow support
try:
from PIL import Image
except ImportError:
try:
import Image
except ImportError:
Image = None
try:
from HTMLParser import HTMLParser
except ImportError:
from html.parser import HTMLParser
if PY3K:
basestring = str
unicode = str
ord = lambda x: x
else:
basestring = basestring
unicode = unicode
ord = ord
# shortcut to bytes conversion (b prefix)
def b(s):
if isinstance(s, basestring):
return s.encode("latin1")
elif isinstance(s, int):
if PY3K:
return bytes([s]) # http://bugs.python.org/issue4588
else:
return chr(s)
def exception():
"Return the current the exception instance currently being handled"
# this is needed to support Python 2.5 that lacks "as" syntax
return sys.exc_info()[1]
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