new_data = {}
for k, v in tmp_data.items():
if isinstance(k, tuple):
k = "_".join(k)
new_data[k] = v
index_name = ColumnDataSource._df_index_name(df)
new_data[index_name] = _df.index.values
After Change
if index_name == "index":
_df.index = pd.Index(_df.index.values)
else:
_df.index = pd.Index(_df.index.values, name=index_name)
_df.reset_index(inplace=True)
tmp_data = {c: v.values for c, v in _df.iteritems()}
