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pythonflask

How to check for the existence of a get parameter in Flask

I'm new to Python and Flask.

I know that I can fetch a GET parameter with request.args.get(varname);. I wanted to check whether a GET request to my server is specifying an optional parameter or not.

Flask documentation didn't help much.

Solution

  • You can actually use the default value,

    opt_param = request.args.get("something")
if opt_param is None:
    print "Argument not provided"