How do I debug a script that uses stdin with ipython?

Question

I've got a python script that takes input on stdin. I'd like to drop into IPython.embed(), like this:

for filepath in sys.stdin:
    dir = os.path.basename(filepath)
    ...
    IPython.embed()

I then invoke the script like this:

find . -type f | thescript.py

The problem is that IPython uses stdin for the interactive console, so the first thing it sees are the remaining pipe data. Then, the pipe closes and the the terminal exits.

Is there a way to debug a script that uses stdin with ipython?

tom · Accepted Answer · 2012-12-20 20:59:47Z

6

You could read your stdin input into a list first, then reset stdin:

stdin_list = list(sys.stdin)
sys.stdin = open('/dev/tty')
for filepath in stdin_list:
    dir = os.path.basename(filepath)
    ...
    IPython.embed()

answered Dec 20, 2012 at 20:59

tom

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1 Comment

HappyFace Over a year ago

IPython does not seem to be able to read the escape codes correctly when I do this. Things like the tab and arrow keys don't work.

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