Deprecate Python 2.6 and 3.3 before removal

CHANGELOG.rst

@@ -1,12 +1,13 @@
 0.9.4
 =====
 
+* Python 2.6 and 3.3 have reached end-of-life and have been deprecated.
+  They will be dropped in JMESPath 1.0.
 * Fix ``min_by``/``max_by`` with empty lists
   `(`issue 151 <https://github.com/jmespath/jmespath.py/pull/151>`__)
 * Fix reverse type for ``null`` type
   (`issue 145 <https://github.com/jmespath/jmespath.py/pull/145>`__)
 
-
 0.9.3
 =====
 

jmespath/__init__.py

@@ -1,9 +1,19 @@
+import warnings
+import sys
 from jmespath import parser
 from jmespath.visitor import Options
 
 __version__ = '0.9.4'
 
 
+if sys.version_info[:2] <= (2, 6) or ((3, 0) <= sys.version_info[:2] <= (3, 3)):
+    python_ver = '.'.join(str(x) for x in sys.version_info[:3])
+
+    warnings.warn('You are using Python {0}, which will no longer be supported in '
+                  'JMESPath 1.0'.format(python_ver),
+                  DeprecationWarning)
+
+
 def compile(expression):
     return parser.Parser().parse(expression)
 

setup.py

@@ -1,10 +1,20 @@
 #!/usr/bin/env python
 
 import io
+import sys
+import warnings
 
 from setuptools import setup, find_packages
 
 
+if sys.version_info[:2] <= (2, 6) or ((3, 0) <= sys.version_info[:2] <= (3, 3)):
+    python_ver = '.'.join(str(x) for x in sys.version_info[:3])
+
+    warnings.warn('You are using Python {0}, which will no longer be supported in '
+                  'JMESPath 1.0'.format(python_ver),
+                  PendingDeprecationWarning)
+
+
 setup(
     name='jmespath',
     version='0.9.4',
@@ -16,6 +26,7 @@
     scripts=['bin/jp.py'],
     packages=find_packages(exclude=['tests']),
     license='MIT',
+    python_requires='>=2.6, !=3.0.*, !=3.1.*, !=3.2.*',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',