updated contents from Atlas repo

decorators/average_partial.py

@@ -0,0 +1,34 @@
+"""
+>>> import functools
+>>> avg = functools.partial(averager, series=[])
+>>> avg(10)
+10.0
+>>> avg(11)
+10.5
+>>> avg(12)
+11.0
+>>> avg.args
+()
+>>> avg.keywords
+{'series': [10, 11, 12]}
+>>> avg.func            # doctest: +ELLIPSIS
+<function averager at 0x...>
+>>> avg.func.__code__.co_varnames
+('new_value', 'series', 'total')
+"""
+
+DEMO = """
+>>> avg.func
+<function averager at 0x1010c5560>
+>>> avg.func.__code__.co_varnames
+('new_value',)
+>>> avg.__code__.co_freevars
+('num_items', 'total')
+>>> avg.__closure__
+"""
+
+def averager(new_value, series):
+    series.append(new_value)
+    total = sum(series)
+    return float(total)/len(series)
+