introduce py.builtin.any

--HG--
branch : trunk

py/__init__.py

@@ -102,6 +102,7 @@ py.apipkg.initpkg(__name__, dict(
         'enumerate'      : '._builtin:enumerate',
         'reversed'       : '._builtin:reversed',
         'sorted'         : '._builtin:sorted',
+        'any'            : '._builtin:any',
         'set'            : '._builtin:set',
         'frozenset'      : '._builtin:frozenset',
         'BaseException'  : '._builtin:BaseException',

py/_builtin.py

@@ -35,6 +35,15 @@ except NameError:
         def __length_hint__(self):
             return self.remaining
 
+try:
+    any = any
+except NameError:
+    def any(iterable):
+        for x in iterable:
+            if x:
+                return True
+        return False
+
 try:
     sorted = sorted
 except NameError: