Merge pull request #313 from broadinstitute/development

Release 1.27.1

Author: ehanna4

ingest/anndata_.py

@@ -65,7 +65,8 @@ def generate_cluster_header(adata, clustering_name):
         dim = ['NAME', 'X', 'Y']
         clustering_dimension = adata.obsm[clustering_name].shape[1]
         if clustering_dimension == 3:
-            headers = dim.append('Z')
+            dim.append('Z') 
+            headers = dim
         elif clustering_dimension == 2:
             headers = dim
         elif clustering_dimension > 3: