How to take arguments in python 3 like myscript.py -i input.txt?

Question

I want my script to take args like:

python myscript.py -i input.fastq -q 23 -l 30 -o outfile.fastq

not like

python myscript.py input.fastq 23 30 outfile.fastq

Is there any package available to do this in python?

Answer 1

You can use argparse for this:

For example python myscript.py -s customscriptvalue

    import argparse

   # Parse arguments
    parser = argparse.ArgumentParser(description='Script options')  
    parser.add_argument('-s', '--script', help='Custom Script to execute', default=None)
    result = parser.parse_args()

    # Treat Arguments in your script
    arguments = dict(result._get_kwargs())
    if arguments['script'] is not None:
        scriptMode = True
        scriptPath = arguments['script']

See https://docs.python.org/3/library/argparse.html