DOC removed ambiguity in pipeline gridsearch example (#12272)

sjtrny · amueller · commit 3f5bf97e8108 · 2018-10-04T09:48:40.000-04:00
* Removed ambiguity in pipeline gridsearch example

* Formatted to pep8
diff --git a/examples/compose/plot_compare_reduction.py b/examples/compose/plot_compare_reduction.py
@@ -43,7 +43,8 @@
 print(__doc__)
 
 pipe = Pipeline([
-    ('reduce_dim', PCA()),
+    # the reduce_dim stage is populated by the param_grid
+    ('reduce_dim', None),
     ('classify', LinearSVC())
 ])
 
