Be consistent about the versions of Python we support. Close #128.

blessings/__init__.py

@@ -14,7 +14,6 @@ class IOUnsupportedOperation(Exception):
         ``io.UnsupportedOperation`` in Python 2"""
 
 from os import isatty, environ
-from platform import python_version_tuple
 import struct
 import sys
 from termios import TIOCGWINSZ
@@ -23,13 +22,6 @@ class IOUnsupportedOperation(Exception):
 __all__ = ['Terminal']
 
 
-if ('3', '0', '0') <= python_version_tuple() < ('3', '2', '2+'):  # Good till
-                                                                  # 3.2.10
-    # Python 3.x < 3.2.3 has a bug in which tparm() erroneously takes a string.
-    raise ImportError('Blessings needs Python 3.2.3 or greater for Python 3 '
-                      'support due to http://bugs.python.org/issue10570.')
-
-
 class Terminal(object):
     """An abstraction around terminal capabilities
 

setup.py

@@ -27,6 +27,7 @@
     test_suite='nose.collector',
     url='https://github.com/erikrose/blessings',
     include_package_data=True,
+    python_requires='>=2.6, !=3.0.*, !=3.1.*, !=3.2.*',
     classifiers=[
         'Intended Audience :: Developers',
         'Natural Language :: English',
@@ -36,11 +37,15 @@
         'License :: OSI Approved :: MIT License',
         'Operating System :: POSIX',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.5',
         'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.2',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Software Development :: Libraries',
         'Topic :: Software Development :: User Interfaces',
         'Topic :: Terminals'