factor out any()

pip/__init__.py

@@ -37,6 +37,7 @@ import ConfigParser
 from distutils.util import strtobool
 from distutils import sysconfig
 from pip.log import logger
+from pip.backwardcompat import any
 
 class InstallationError(Exception):
     """General exception during installation"""
@@ -50,15 +51,6 @@ class DistributionNotFound(InstallationError):
 class BadCommand(Exception):
     """Raised when virtualenv or a command is not found"""
 
-try:
-    any
-except NameError:
-    def any(seq):
-        for item in seq:
-            if item:
-                return True
-        return False
-
 if getattr(sys, 'real_prefix', None):
     ## FIXME: is build/ a good name?
     build_prefix = os.path.join(sys.prefix, 'build')

pip/backwardcompat.py

@@ -0,0 +1,12 @@
+"""Stuff that isn't in some old versions of Python"""
+
+__all__ = ['any']
+
+try:
+    any
+except NameError:
+    def any(seq):
+        for item in seq:
+            if item:
+                return True
+        return False