Question 109700 in Json Question posted in
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Json – Python Dict prints last place on first place

I made the following dict:

    logs = {
    '3h forecast': {
        'Ort': '',
        'Datum und Uhrzeit': '',
        'Temperatur': '',
        'Temperatur_Min': '',
        'Temperatur_Max': ''},

    '6h forecast': {
        'Ort': '',
        'Datum und Uhrzeit': '',
        'Temperatur': '',
        'Temperatur_Min': '',
        'Temperatur_Max': ''},

    '9h forecast': {
        'Ort': '',
        'Datum und Uhrzeit': '',
        'Temperatur': '',
        'Temperatur_Min': '',
        'Temperatur_Max': ''},

    '12h forecast': {
        'Ort': '',
        'Datum und Uhrzeit': '',
        'Temperatur': '',
        'Temperatur_Min': '',
        'Temperatur_Max': ''}
}

and print it with following line:

print(json.dumps(logs, sort_keys=True, indent=4))

and the result in the console is this:

{
"12h forecast": {
"Datum und Uhrzeit": "",
"Ort": "",
"Temperatur": "",
"Temperatur_Max": "",
"Temperatur_Min": ""
},
"3h forecast": {
"Datum und Uhrzeit": "",
"Ort": "",
"Temperatur": "",
"Temperatur_Max": "",
"Temperatur_Min": ""
},
"6h forecast": {
"Datum und Uhrzeit": "",
"Ort": "",
"Temperatur": "",
"Temperatur_Max": "",
"Temperatur_Min": ""
},
"9h forecast": {
"Datum und Uhrzeit": "",
"Ort": "",
"Temperatur": "",
"Temperatur_Max": "",
"Temperatur_Min": ""
}
}

So… Why is the 12h forecast now on the first place and not like the logs dict on the last place?

What am I doing wrong? 🙂

Tags:

2

Answers


  1. 0

    just remove sort_keys=True

    print(json.dumps(logs, indent=4))

    #output

    {
    "3h forecast": {
        "Ort": "",
        "Datum und Uhrzeit": "",
        "Temperatur": "",
        "Temperatur_Min": "",
        "Temperatur_Max": ""
    },
    "6h forecast": {
        "Ort": "",
        "Datum und Uhrzeit": "",
        "Temperatur": "",
        "Temperatur_Min": "",
        "Temperatur_Max": ""
    },
    "9h forecast": {
        "Ort": "",
        "Datum und Uhrzeit": "",
        "Temperatur": "",
        "Temperatur_Min": "",
        "Temperatur_Max": ""
    },
    "12h forecast": {
        "Ort": "",
        "Datum und Uhrzeit": "",
        "Temperatur": "",
        "Temperatur_Min": "",
        "Temperatur_Max": ""
    }
}
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  2. 0

    What happened here is that you were sorting the keys based on strings.
    So the '1' from '12' got compared with the '3' from the other forecast.
    And because '1' is lower than '3' in the ASCII table it is placed earlier in the list.

    You can check this behavior yourself by comparing

    '9' < '10'

    to

    9 < 10

    To prevent this is in this specific case you can remove the sort_keys attribute.

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