Run Python Script with Bash - null-object doesn't work -

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i've got following script converts pdf-files python-script python-script has 3 inputs: pperation-key input-file output-file. operation-key can have value null, 1, 2.

#!/bin/bash  f in *.pdf     outputdir="`pwd`/${f%.pdf}_out.pdf"     inputdir="`pwd`/$f"     python <myscript> "null" $inputdir $outputdir done

in terminal python-script works following inputs, not in shell-script:

python convertpdf.py  null /users/admin/test.pdf /users/admin/test_out.pdf

how can deliever null object script?

it missing double quotes!

now following script works perfect!

#!/bin/bash  f in *.pdf     outputdir="`pwd`/${f%.pdf}_out.pdf"     inputdir="`pwd`/$f"     python <myscript> "null" "$inputdir" "$outputdir" done

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