deprecation: append to concat

Author: maxibor

sourcepredict/sourcepredictlib/ml.py

@@ -307,8 +307,7 @@ def embed(self, method, out_csv, seed, threads=1, n_comp=2):
         if out_csv:
             to_write = self.my_embed.copy(deep=True)
             y = self.labels.copy(deep=True)
-            y = y.append(
-                pd.Series(data=['sink']*len(list(self.test.columns)), index=self.test.columns, name='labels'))
+            y = pd.concat([y, pd.Series(data=['known']*len(list(self.test.columns)), index=self.test.columns, name='labels')])
             to_write = to_write.merge(y, left_index=True, right_index=True)
             to_write['name'] = to_write.index
             to_write.to_csv(out_csv)