sys.stdin.readlines() hangs Python script

python stdin freeze readlines
Bo A picture Bo A · Aug 3, 2012 · Viewed 29.9k times · Source

Everytime I'm executing my Python script, it appears to hang on this line:

lines = sys.stdin.readlines()

What should I do to fix/avoid this?

EDIT

Here's what I'm doing with lines:

lines = sys.stdin.readlines()
updates = [line.split() for line in lines]

EDIT 2

I'm running this script from a git hook so is there anyway around the EOF?

Answer

mgilson picture mgilson · Aug 3, 2012

This depends a lot on what you are trying to accomplish. You might be able do:

for line in sys.stdin:
    #do something with line

Of course, with this idiom as well as the readlines() method you are using, you need to somehow send the EOF character to your script so that it knows that the file is ready to read. (On unix Ctrl-D usually does the trick).

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