add _ipython_key_completions_ method to TsdFrame

Author: eschombu

pynapple/core/time_series.py

@@ -1238,6 +1238,9 @@ def __getitem__(self, key, *args, **kwargs):
             else:
                 return output
 
+    def _ipython_key_completions_(self) -> list:
+        return list(self.columns)
+
     def as_dataframe(self):
         """
         Convert the TsdFrame object to a pandas.DataFrame object.