In Django how to convert HTML post input field values or csv values to Python list

<input type="hidden" name="allowed-extension[]" value="jpg" />
<input type="hidden" name="allowed-extension[]" value="jpeg" />
<input type="hidden" name="allowed-extension[]" value="png" />

or

<input type="hidden" name="allowed-extensions" value="jpg,jpeg,png" />

I need to convert HTML post input field values or CSV values in a form to a Python list, like in the above scenarios. Kindly let me know. Thank you

to handle both cases you can do-

allowed_extensions = request.POST.getlist("allowed-extension[]") or request.POST.get("allowed-extensions", "").split(",")
allowed_extensions = [ext.strip() for ext in allowed_extensions if ext.strip()]  # this will clean up your white space
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