How to answer to prompts automatically with python fabric?

python command-prompt fabric
aemdy picture aemdy · May 7, 2012 · Viewed 20.7k times · Source

I want to run a command which prompts me to enter yes/no or y/n or whatever. If I just run the command local("my_command") then it stops and asks me for input. When I type what is needed, script continues to work. How can I automatically respond to the prompt?

Answer

Timothée Jeannin picture Timothée Jeannin · Aug 19, 2014

Starting from version 1.9, Fabric includes a way of managing this properly.

The section about Prompts in the Fabric documentation says:

The prompts dictionary allows users to control interactive prompts. If a key in the dictionary is found in a command’s standard output stream, Fabric will automatically answer with the corresponding dictionary value.

You should be able to make Fabric automatically answer prompts like this:

with settings(prompts={'Do you want to continue [Y/n]? ': 'Y'}):
    run('apt-get update')
    run('apt-get upgrade')

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