Page 100 - Beginning Programming with Pyth - John Paul Mueller

multiline commenting, you do see the code that isn’t executing as part of the output (and it can actually be helpful to see where the code affects the output). Figure 4-22 shows an example of code commenting techniques.
FIGURE 4-22: Use comments to keep code from executing. Closing Jupyter Notebook
After you have used the File ⇒ Close and Halt command to close each of the notebooks you have open, you can simply close the browser window to end your session. However, the server continues to run in the background. Normally, a Jupyter Notebook window opens, like the one shown in Figure 4-23. This window remains open until you stop the server. Simply press Ctrl+C to end the server session, and the window will close.