Renamed Rollup to Totals, changed constructor to accept *args instead…

… of a list, removed imports for references and operations from slicer.__init__ so these must be imported from their respective packages, updated docs

docs/2_slicer.rst

@@ -318,7 +318,7 @@ For each |FeatureReference|, there are the following variations:
 
 .. code-block:: python
 
-    from fireant.slicer import WoW, DeltaMoM, DeltaQoQ
+    from fireant.slicer.references import WoW, DeltaMoM, DeltaQoQ
 
     slicer.notebook.column_index_table(
         metrics=['clicks', 'conversions'],
@@ -328,4 +328,30 @@ For each |FeatureReference|, there are the following variations:
 
 .. note::
 
-    For any reference, the comparison is made for the same days of the week.
+    For any reference, the comparison is made for the same days of the week.
+
+
+Post-Processing Operations
+--------------------------
+
+Operations include extra computations that modify the final results.
+
+Totals
+""""""
+
+Totals adds ``ROLLUP`` to the SQL query to load the data and aggregated across dimensions.  It requires one or more dimension keys as parameters for the dimensions that should be totaled.  The below example will add an extra line with the total clicks and conversions for each date in addition to the three lines for each device type, desktop, mobile and tablet.
+
+.. code-block:: python
+
+    from fireant.slicer.operations import Totals
+
+    slicer.notebook.line_chart(
+        metrics=['clicks', 'conversions'],
+        dimensions=['date', 'device'],
+        operations=[Totals('device')],
+    )
+
+L1 and L2 Loss
+""""""""""""""
+
+Coming soon

fireant/slicer/__init__.py

@@ -1,7 +1,5 @@
 # coding: utf-8
 from .filters import EqualityFilter, ContainsFilter, RangeFilter, WildcardFilter
 from .managers import SlicerException
-from .operations import Rollup
-from .references import WoW, MoM, QoQ, YoY, Delta, DeltaPercentage
 from .schemas import (Slicer, Metric, Dimension, CategoricalDimension, ContinuousDimension, NumericInterval,
                       UniqueDimension, DatetimeDimension, DatetimeInterval, DimensionValue, EqualityOperator, Join)

fireant/slicer/operations.py

@@ -13,9 +13,9 @@ def schemas(self, slicer):
         raise NotImplementedError
 
 
-class Rollup(Operation):
-    def __init__(self, dimension_keys):
-        super(Rollup, self).__init__('rollup')
+class Totals(Operation):
+    def __init__(self, *dimension_keys):
+        super(Totals, self).__init__('rollup')
         self.dimension_keys = dimension_keys
 
     def schemas(self, slicer):

fireant/tests/slicer/test_slicer_api.py

@@ -4,6 +4,8 @@
 
 from fireant import settings
 from fireant.slicer import *
+from fireant.slicer.operations import Totals
+from fireant.slicer.references import *
 from fireant.tests.database.mock_database import TestDatabase
 from pypika import functions as fn, Tables, Case
 
@@ -702,7 +704,7 @@ def test_rollup_operation(self):
         query_schema = self.test_slicer.manager.query_schema(
             metrics=['foo'],
             dimensions=['date', 'locale', 'account'],
-            operations=[Rollup(['locale', 'account'])],
+            operations=[Totals('locale', 'account')],
         )
 
         self.assertTrue({'table', 'metrics', 'dimensions', 'rollup'}.issubset(query_schema.keys()))