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pythonargparseoptparse

Using optparse or argparse to process multiple arguments using the same option

I'm trying to write a python script that can echo whatever a user types when running the script

Right now, the code I have is (version_msg and usage_msg don't matter right now)

from optparse import OptionParser 

version_msg = ""
usage_msg = ""
parser = OptionParser(version=version_msg, usage=usage_msg)
parser.add_option("-e", "--echo", action="append", dest="input_lines", default=[])

But if I try to run the script (python options.py -e hello world), it echoes just ['hello']. How would I go about fixing this so it outputs ['hello', 'world']?

Solution

  • A slightly hacky way of doing it:

    from optparse import OptionParser

version_msg = ""
usage_msg = ""
parser = OptionParser(version=version_msg, usage=usage_msg)
parser.add_option("-e", "--echo", action="append", dest="input_lines", default=[])

options, arguments = parser.parse_args()

print(options.input_lines + arguments)

    I then run

    python myscript.py -e hello world how are you

    Output:

    ['hello', 'world', 'how', 'are', 'you']