Remove flake8 error

Akshay0724 · Akshay0724 · commit 8cd7c87c6040 · 2017-02-11T23:52:49.000+05:30
diff --git a/sklearn/cluster/dbscan_.py b/sklearn/cluster/dbscan_.py
@@ -121,8 +121,8 @@ def dbscan(X, eps=0.5, min_samples=5, metric='minkowski', metric_params=None,
     # neighborhood of point i. While True, its useless information)
     if metric == 'precomputed' and sparse.issparse(X):
         neighborhoods = np.empty(X.shape[0], dtype=object)
-        
-        #Modify X so that every element first row are not zero
+
+        # Modify X so that every element first row are not zero
         if X.indptr[0] == X.indptr[1] == 0:
             indptr = X.indptr
             indptr = indptr+1
