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pythonjsonargs

Parse args to json elements in python

i have a data structure that i want to fill with cmd args

params = {
  ...
  ...
  "blockX": "{\"nameX\":["\Arg1\","\Arg2\",\"Arg3\"........"\ArgX\"]}",
  ...
  ...
}

Then i run a post request with the params as data:

r = requests.post("https://url", data=params)

I only know how to do it with one element

"BlockX": "{\"nameX\": \"%s\"}" %ArgX,

Regards

Solution

  • Your example suggest you want to join the arguments. You can convert any list into a single string by merging with a separator:

    args = ['foo', 'bar', 'hold the mustard']
print('", "'.join(args))

    So to get your list '"Arg1", "Arg2"' etc, join them with the '", "' separator and insert that into your template:

    '{"nameX": ["%s"]}' % '", "'.join(args)

    Note how ' allows you to skip escaping each ". In your example, this would look like:

    params = {
  #...
  "blockX": '{"nameX": ["%s"]}' % '", "'.join(args),
  # ...
 }

    Please keep in mind that you are putting a string representation of a JSON into a JSON! This is... perhaps not the right thing to do. A proper API would expect just a single JSON, in which case you can dump args directly.

    params = {
  #...
  "blockX": {
    "nameX": args
  },
  # ...
 }