I&#39;m trying to write a script that accepts multiple input sources and does something to each one. Something like this

    ./my_script.py \
        -i input1_url input1_name input1_other_var \
        -i input2_url input2_name input2_other_var \
        -i input3_url input3_name
    # notice inputX_other_var is optional

But I can&#39;t quite figure out how to do this using `argparse`. It seems that it&#39;s set up so that each option flag can only be used once. I know how to associate multiple arguments with a single option (`nargs=&#39;*&#39;` or `nargs=&#39;+&#39;`), but that still won&#39;t let me use the `-i` flag multiple times. How do I go about accomplishing this?

Just to be clear, what I would like in the end is a list of lists of strings. So

    [[&quot;input1_url&quot;, &quot;input1_name&quot;, &quot;input1_other&quot;],
     [&quot;input2_url&quot;, &quot;input2_name&quot;, &quot;input2_other&quot;],
     [&quot;input3_url&quot;, &quot;input3_name&quot;]]

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Using the same option multiple times in Python's argparse