How to create a item with value in Python?

It’s working !

    try:
        query = 'mutation { \
                    create_item( \
                    board_id: 6373870433, \
                    item_name: "Foo 1", \
                    column_values: "{\\\"chiffres\\\":\\\"123\\\", \\\"texte\\\":\\\"Bar\\\"}"\
                    ) \
                { id } }'
        data = {'query': query}
        r = requests.post(url=apiUrl, json=data, headers=headers)
        rjson = r.json()
        print(rjson)
    except Exception as e:
        print("NOK -- The query is wrong...")
        print(e)
        exit()

Juste copy this name (ID) :
image

In reality, the documentation is in English, but my Monday is French.
We should put a warning to indicate that this may vary depending on the country language in the documentation.