Python – How to Pass Arguments into a Python Script

python

I know how to pass arguments into a shell script. These arguments are declared in AWS datapipeline and passed through. This is what a shell script would look like:

firstarg=$1
secondarg=$2

How do I do this in Python? Is it the exact same?

Best Answer

This worked for me:

import sys
firstarg=sys.argv[1]
secondarg=sys.argv[2]
thirdarg=sys.argv[3]

Related Solutions

Python – pipe function arguments to command line arguments in python

Yes it can be done:

cmd.py `files.py`

Then first files.py is executed and the output (Example: "file1.txt file2.txt") is the input for the cmd.py.

Example:

cat `ls`

This "cats" all the files found by ls in the working directory.

Scripting – Piping Python Variable Value to Bash Script

Python doesn't expand variables in strings in the same way as bash. If you have VAR in python and want to pass that to bash you could do

subprocess.call('echo {} | /path/to/script --args'.format(VAR), shell=True)

if VAR in python holds the name of a bash variable you want to expand you could do similar:

subprocess.call('echo "${}" | /path/to/script --args'.format(VAR), shell=True)

Best Answer

Related Solutions

Python – pipe function arguments to command line arguments in python

Scripting – Piping Python Variable Value to Bash Script

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