Merge pull request #145 from jsirois/jsirois/issues/144

Accommodate OSX `Python` python binaries.

CHANGES.rst

@@ -3,9 +3,18 @@ CHANGES
 =======
 
 ----------
-1.0.2.dev0
+1.0.3.dev0
 ----------
 
+* Bug fix: Accommodate OSX `Python` python binaries.  Previously the OSX python distributions shipped
+  with OSX, XCode and available via https://www.python.org/downloads/ could fail to be detected using
+  the `PythonInterpreter` class.
+  Fixes `#144 <https://github.com/pantsbuild/pex/issues/144>`_.
+
+-----
+1.0.2
+-----
+
 * Bug fix: PEX-INFO values were overridden by environment `Variables` with default values that were
   not explicitly set in the environment.
   Fixes `#135 <https://github.com/pantsbuild/pex/issues/135>`_.

pex/interpreter.py

@@ -178,7 +178,10 @@ def __hash__(self):
 class PythonInterpreter(object):
   REGEXEN = (
     re.compile(r'jython$'),
-    re.compile(r'python$'),
+
+    # NB: OSX ships python binaries named Python so we allow for capital-P.
+    re.compile(r'[Pp]ython$'),
+
     re.compile(r'python[23].[0-9]$'),
     re.compile(r'pypy$'),
     re.compile(r'pypy-1.[0-9]$'),

pex/version.py

@@ -1,7 +1,7 @@
 # Copyright 2015 Pants project contributors (see CONTRIBUTORS.md).
 # Licensed under the Apache License, Version 2.0 (see LICENSE).
 
-__version__ = '1.0.2'
+__version__ = '1.0.3.dev0'
 
 SETUPTOOLS_REQUIREMENT = 'setuptools>=2.2,<16'
 WHEEL_REQUIREMENT = 'wheel>=0.24.0,<0.25.0'