write-python3

python_two.py

from __future___ import print_function

try:
    input = raw_input
    str = unicode
    range = xrange
except NameError:
    pass

try:
    from io import StringIO
    from unittest.mock import Mock
except ImportError:
    import StringIO
    from mock i

some_module.py

import urllib.request, urllib.parse, urllib.error

value = list(range(1, 10))[-1]

if value != 9:
    print("Value %s is not 9" % value)
else:
    print("Value is 9")

try:
    assert 1 == 2
except AssertionError as e:
    print(e)
    print(urllib.request.urlopen('https://docs.python.org/2/library/exceptions.html').read())

some_module_py2.py

import urllib

value = range(1, 10)[-1]

if value <> 9:
    print "Value %s is not 9" % value
else:
    print "Value is 9"

try:
    assert 1 == 2
except AssertionError, e:
    print e
    print urllib.urlopen('https://docs.python.org/2/library/exceptions.html').read()