Add api.env.plone_version() and api.env.zope_version() (refs. #126)

CHANGES.rst

@@ -1,6 +1,13 @@
 Changelog
 =========
 
+1.2.0 (unreleased)
+------------------
+
+- Add ``api.env.plone_version()`` and ``api.env.zope_version()`` refs. #126.
+  [hvelarde]
+
+
 1.1.0 (2013-10-12)
 ------------------
 

docs/env.rst

@@ -104,6 +104,38 @@ To know if your plone instance is running in a test runner, use
         pass  # do something
 
 
+.. _env_plone_version_example:
+
+Plone version
+-------------
+
+To know what version of Plone you are using, use :meth:`api.env.plone_version`.
+
+.. code-block:: python
+
+    from plone import api
+
+    plone_version = api.env.plone_version()
+    if plone_version < '4.1':
+        pass  # do something
+
+
+.. _env_zope_version_example:
+
+Zope version
+------------
+
+To know what version of Zope 2 you are using, use :meth:`api.env.zope_version`.
+
+.. code-block:: python
+
+    from plone import api
+
+    zope_version = api.env.zope_version()
+    if zope_version >= '2.13':
+        pass  # do something
+
+
 Further reading
 ---------------
 

src/plone/api/env.py

@@ -1,14 +1,15 @@
 # -*- coding: utf-8 -*-
 from AccessControl.SecurityManagement import getSecurityManager
-from AccessControl.SecurityManagement import setSecurityManager
 from AccessControl.SecurityManagement import newSecurityManager
+from AccessControl.SecurityManagement import setSecurityManager
 from contextlib import contextmanager
+from pkg_resources import get_distribution
 from plone.api import portal
 from plone.api.exc import InvalidParameterError
 from plone.api.exc import UserNotFoundError
-from plone.api.validation import required_parameters
 from plone.api.validation import at_least_one_of
 from plone.api.validation import mutually_exclusive_parameters
+from plone.api.validation import required_parameters
 from zope.globalrequest import getRequest
 
 import Globals
@@ -185,3 +186,21 @@ def test_mode():
                 break
 
     return env.IS_TEST
+
+
+def plone_version():
+    """Return Plone version number.
+
+    :returns: string denoting what release of Plone this distribution contains
+    :Example: :ref:`env_plone_version_example`
+    """
+    return get_distribution('Plone').version
+
+
+def zope_version():
+    """Return Zope 2 version number.
+
+    :returns: string denoting what release of Zope2 this distribution contains
+    :Example: :ref:`env_zope_version_example`
+    """
+    return get_distribution('Zope2').version

src/plone/api/tests/test_env.py

@@ -392,3 +392,23 @@ class TestPloneApiEnv(unittest.TestCase):
         """Tests that test_mode() returns True as we are in a test runner."""
         from plone.api.env import test_mode
         self.assertEqual(test_mode(), True)
+
+    def test_plone_version(self):
+        """Tests that plone_version() returns Plone version."""
+        from plone.api.env import plone_version
+        self.assertTrue(isinstance(plone_version(), str))
+        # version should be something like 'X.Y' or 'X.Y.Z'
+        versions = plone_version().split('.')
+        self.assertTrue(len(versions) >= 2)
+        for v in versions:
+            self.assertTrue(v.isdigit())
+
+    def test_zope_version(self):
+        """Tests that zope_version() returns Zope version."""
+        from plone.api.env import zope_version
+        self.assertTrue(isinstance(zope_version(), str))
+        # version should be something like 'X.Y' or 'X.Y.Z'
+        versions = zope_version().split('.')
+        self.assertTrue(len(versions) >= 2)
+        for v in versions:
+            self.assertTrue(v.isdigit())