argparse namespace clashes

[Robin Becker]

After converting a previously working optparse I found that I should not be using 'args' as a destination as it seemed to break 
django 1.11 management command execution.

I changed both the flag name '--args' to '--task-args' and the destination 
'args' to 'task-args' and that seemed to fix things.
Is there a recommendation anywhere for names and detinations to avoid?
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Robin Becker

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