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Writing Crunch scripts in Python

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How to read your input file from the json template

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How to write your file to a collection

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How to run an external command

Usually this is most convenient:

import subprocess
foo = subprocess.check_output(['echo','foo'])

If the output is big, redirect it to a file:

import subprocess
with open('/tmp/foo', 'w') as outfile:
    subprocess.check_call(['head', '-c', '1234567', '/dev/urandom'], stdout=outfile)

How to create new tasks per input file in a collection

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Where to put temporary files

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How to write data directly to Keep with native Python code

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Updated by Tom Clegg over 9 years ago · 7 revisions