Variable name as class name in python json

I have this piece of code

import json

class Object:
    def toJSON(self):
        return json.dumps(self, default=lambda o: o.__dict__,
                          sort_keys=False, indent=4)

languages={"pl_PL":"1","en_US":"2","de_DE":"4","fr_FR":"10","cs_CZ":"6"}
def generateJSON():
    product=Object()

    for lang in languages.keys():
        product.translations = Object()
        product.translations.lang=Object()
        product.translations.lang.name = "xxx"

    print(product.toJSON())

if __name__ == '__main__':
    generateJSON()

Which gives me an output:

{
"translations": {
"lang": {
"name": "xxx"
}
} }

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How can I assing lang value to my Object name to get the output:

{
"translations": {
"pl_PL": {
"name": "xxx"
},
{
"en_US": {
"name": "xxx"
}
}etc… }

>Solution :

To use the string names in lang each time round the loop you need to use setattr() and getattr():

import json

class Object:
    def toJSON(self):
        return json.dumps(self, default=lambda o: o.__dict__,
                          sort_keys=False, indent=4)

languages={"pl_PL":"1","en_US":"2","de_DE":"4","fr_FR":"10","cs_CZ":"6"}
def generateJSON():
    product=Object()
    product.translations = Object()

    for lang in languages.keys():
        setattr(product.translations,lang,Object())
        getattr(product.translations,lang).name = "xxx"

    print(product.toJSON())

if __name__ == '__main__':
    generateJSON()

Output as requested.