Python - json without whitespaces

I just realized that json.dumps() adds spaces in the JSON object

e.g.

    {'duration': '02:55', 'name': 'flower', 'chg': 0}

how can remove the spaces in order to make the JSON more compact and save bytes to be sent via HTTP?

such as:

    {'duration':'02:55','name':'flower','chg':0}
    json.dumps(separators=(',', ':'))

From: stackoverflow.com/q/16311562

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