How can I tell if IPython is running?

Question

I have an IPython notebook. I have a long-running loop that produces no output in one of the code blocks. It's not this, but imagine it was this:

for i in range(100):     time.sleep(2) 

I started the code block running a while ago, and now I can't tell whether it's finished, or whether it's still running.

All the IPython status bar says at the top is Last Checkpoint: 23 minutes ago (autosaved). There's nothing in the browser tab to show whether it's running code, either.

I don't want to start the next block because I don't know if this block has finished.

And I don't want to stop the kernel and add print statements to this block, because if it's 80% of the way through, I don't want to kill it and restart it!

Is there anything in IPython - either the browser window or the console - that indicates what code is running right now?

Answer 1

1. You can see whether code still being executed or not in three places, In the top right corner, there will small circle which stays solid till the execution of code completes.

2. Every cell will have cell number but when that cell being executed it will show * instead of a number

3. In chrome and firefox browsers tabs icon changes from notebook to a clock.