sub columns df panda code example
Example: pandas sub columns
| Start | Intermediary | End |
| | | | | | |
_________________________________________________________________
| s_lat | s_lng | i_lat | i_lng | e_lat | e_lng |
mux = pd.MultiIndex.from_product([['Start','Intermediary','End'], ['lat','lng']])
df = pd.DataFrame(data, columns=mux)