Scenario (general):
1.1 Start code-server:
WORKON_HOME=~ code-server --cert --cert-host 172.30.15.137 --disable-telemetry --disable-update-check ~/_railcars
2.1 Open https://172.30.15.137:8080 in Google Chrome
3.1 Open Untitled.ipynb
, run three cells: import pandas, create DataFrame, sum dataframe values