How to send a "string array" as HTTP post data from Python?

Question

I'm using Python to interface to a web service which receives http post messages. For one particular service, the documentation reads:

Parameters:

Name               Type           Value
meteringPointIds   String array   List of metering point ids

HTTP verb: POST

I only have one metering point id, so I'm using this construction:

postData = {'meteringPointIds': meteringPointId}
r = requests.post( url + path, headers=headers, json=postData)

The variable meteringPointId contains a string with the metering point id.

#20013: No meteringpoints in request conforms to valid meteringpoint format.

Let's say the metering point id is 1234. I've tried

postData = {'meteringPointIds': 1234}
postData = {'meteringPointIds': [1234]}
postData = {'meteringPointIds': ['1234']}
postData = {'meteringPointIds': '[1234]'}
postData = {'meteringPointIds': ["1234"]}
postData = {'meteringPointIds': "[1234]"}

But no matter what I do, I always get the above error. What am I missing?

Web service documentation:

Customer and Third party API for Datahub Eloverblik Technical description

API - Data Description

Can you post the link to the web service's documentation that you mentioned? — Boom100100
– Boom100100, Commented Jun 17, 2021 at 16:47

Wild Zyzop · Accepted Answer · 2021-06-17 17:03:42Z

1

Try this JSON:

postData = {
    "meteringPoints": {
        "meteringPoint": [
            "1234"
        ]
    }
}

or, maybe

postData = {
    "meteringPointIds": {
        "meteringPoints": {
            "meteringPoint": [
                "1234"
            ]
        }
    }
}

answered Jun 17, 2021 at 17:03

Wild Zyzop

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1 Comment

OZ1SEJ Over a year ago

Amazing - your first suggestion worked! Thanks! :-)

Boom100100 · Accepted Answer · 2021-06-17 16:45:49Z

1

Try a string with comma-separated values. I don't think you need a comma for just one value.

postData = {'meteringPointIds': "1234"}

answered Jun 17, 2021 at 16:45

Boom100100

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