Python - scripting a “yes” response to all questions/prompts

Question

I've come across a program run by Python2, which asks many questions of yes/no type.

I want to answer "yes" to all of them, but it's really difficult because there are literally hundreds of them (it's basically a parser of code, which asks about every found variable).

So, is there any possibility, how to force Python answer "yes" automatically?

I think about something similar to apt-get -y install. And I'm interested in answers about both Python2 and Python3.

I'm using Lubuntu 16.10 and my default Shell is GNU bash, version 4.3.48.

How about providing a default value of yes so you can just keep pressing Enter? — lightsong, Jul 24 '17 at 08:52
maybe you could redefine `input()` to return `yes` inconditionally. — Jean-François Fabre, Jul 24 '17 at 08:52
there's also a "yes" command on unix which just prints infinite "yes" to standard input. — Jean-François Fabre, Jul 24 '17 at 08:52
May I ask, why all the downvotes? I see, that the similar problem, was already asked, but I wasn't able to find it, as there is no mention of Python in the other question and I was asking about this specific feature of Python... — Eenoku, Jul 24 '17 at 08:59

coredump · Accepted Answer · 2017-07-24T08:56:14.420

9

Try using yes:

yes | python ./script.py

If you have a more complex state to manage during interaction, there is also expect.

yes emits y by default, but you can customize it by providing an argument (e.g. yes yes), thanks @tobias_k. If you need a portable way (in Python), go with the suggestion from Jean-François Fabre (or just hack the script).

edited Jul 24 '17 at 08:56

answered Jul 24 '17 at 08:53

coredump

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YES WAS GOING TO SUGGEST THIS – cs95 Jul 24 '17 at 08:53
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Doesn't this only print "y" instead of "yes"? Maybe use `yes yes | ...` – tobias_k Jul 24 '17 at 08:54
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doesn't exist on windows, though. – Jean-François Fabre Jul 24 '17 at 08:55

Python - scripting a “yes” response to all questions/prompts

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