Mimesis… provides data for a variety of purposes in a variety of languages. The fake data could be used to populate a testing database, create fake API endpoints, create JSON and XML files of arbitrary structure, anonymize data taken from production and etc.

Data generators like Mimesis are fun to use (and I imagine fun to code as well):

>>> from mimesis import Person
>>> person = Person('en')

>>> person.full_name()
'Brande Sears'

>>> person.email(domains=['mimesis.name'])
'roccelline1878@mimesis.name'

>>> person.email(domains=['mimesis.name'], unique=True)
'f272a05d39ec46fdac5be4ac7be45f3f@mimesis.name'

>>> person.telephone(mask='1-4##-8##-5##3')
'1-436-896-5213'