Mimesis is a fast and easy to use library for Python programming language, which helps generate mock (dummy) data for a variety of purposes (see "Data providers") in a variety of languages (see "Locales"). This data can be particularly useful during software development and testing. The library was written with the use of tools from the standard Python library, and therefore, it does not have any side dependencies.
Mimesis offers a number of advantages over other similar libraries, such as Faker:
- Performance. Mimesis is significantly faster than other similar libraries.
- Completeness. Mimesis strives to provide many detailed providers that offer a variety of data generators.
- Simplicity. Mimesis does not require any modules other than the Python standard library.
See here for an example of how we compare performance with other libraries.
Mimesis is very simple to use, and the below examples should help you get started. Complete documentation for Mimesis is available on Read the Docs.
To install mimesis, simply:
➜ ~ pip install mimesisAlso you can install it manually:
(env) ➜ python3 setup.py install
# or
(env) ➜ make installAs we said above, this library is really easy to use. A simple usage example is given below:
>>> import mimesis
>>> person = mimesis.Personal(locale='en')
>>> person.full_name(gender='female')
'Antonetta Garrison'
>>> person.occupation()
'Backend Developer'
>>> templates = ['U_d', 'U-d', 'l_d', 'l-d']
>>> for template in templates:
... person.username(template=template)
'Adders_1893'
'Abdel-1888'
'constructor_1884'
'chegre-2051'You can specify a locale when creating providers and they will return data that is appropriate for the language or country associated with that locale:
>>> from mimesis import Personal
>>> de = Personal('de')
>>> ic = Personal('is')
>>> de.full_name()
'Sabrina Gutermuth'
>>> ic.full_name()
'Rósa Þórlindsdóttir'Mimesis currently includes support for 33 different locales. See details for more information.
| № | Flag | Code | Name | Native name |
|---|---|---|---|---|
| 1 | 🇨🇿 | cs |
Czech | Česky |
| 2 | 🇩🇰 | da |
Danish | Dansk |
| 3 | 🇩🇪 | de |
German | Deutsch |
| 4 | 🇦🇹 | de-at |
Austrian German | Deutsch |
| 5 | 🇨🇭 | de-ch |
Swiss German | Deutsch |
| 6 | 🇬🇷 | el |
Greek | Ελληνικά |
| 7 | 🇺🇸 | en |
English | English |
| 8 | 🇦🇺 | en-au |
Australian English | English |
| 9 | 🇨🇦 | en-ca |
Canadian English | English |
| 10 | 🇬🇧 | en-gb |
British English | English |
| 11 | 🇪🇸 | es |
Spanish | Español |
| 12 | 🇲🇽 | es-mx |
Mexican Spanish | Español |
| 13 | 🇪🇪 | et |
Estonian | Eesti |
| 14 | 🇮🇷 | fa |
Farsi | فارسی |
| 15 | 🇫🇮 | fi |
Finnish | Suomi |
| 16 | 🇫🇷 | fr |
French | Français |
| 17 | 🇭🇺 | hu |
Hungarian | Magyar |
| 18 | 🇮🇸 | is |
Icelandic | Íslenska |
| 19 | 🇮🇹 | it |
Italian | Italiano |
| 20 | 🇯🇵 | ja |
Japanese | 日本語 |
| 21 | 🇰🇿 | kk |
Kazakh | Қазақша |
| 22 | 🇰🇷 | ko |
Korean | 한국어 |
| 23 | 🇳🇱 | nl |
Dutch | Nederlands |
| 24 | 🇧🇪 | nl-be |
Belgium Dutch | Nederlands |
| 25 | 🇳🇴 | no |
Norwegian | Norsk |
| 26 | 🇵🇱 | pl |
Polish | Polski |
| 27 | 🇵🇹 | pt |
Portuguese | Português |
| 28 | 🇧🇷 | pt-br |
Brazilian Portuguese | Português Brasileiro |
| 29 | 🇷🇺 | ru |
Russian | Русский |
| 30 | 🇸🇪 | sv |
Swedish | Svenska |
| 31 | 🇹🇷 | tr |
Turkish | Türkçe |
| 32 | 🇺🇦 | uk |
Ukrainian | Український |
| 33 | 🇨🇳 | zh |
Chinese | 汉语 |
When you only need to generate data for a single locale, use the Generic() provider, and you can access all providers of Mimesis from one object.
>>> import mimesis
>>> g = mimesis.Generic('es')
>>> g.datetime.month()
'Agosto'
>>> g.food.fruit()
'Limón'
>>> g.internet.top_level_domain('GeoTLD')
'.moscow'Mimesis support over twenty different data providers available, which can produce data related to food, people, computer hardware, transportation, addresses, and more. See details for more information.
| № | Provider | Description |
|---|---|---|
| 1 | Address | Address data (street name, street suffix etc.) |
| 2 | Business | Business data (company, company_type, copyright etc.) |
| 3 | Code | Codes (ISBN, EAN, IMEI etc.). |
| 4 | ClothingSizes | Clothing sizes (international sizes, european etc.) |
| 5 | Datetime | Datetime (day_of_week, month, year etc.) |
| 6 | Development | Data for developers (version, programming language etc.) |
| 7 | File | File data (extension etc.) |
| 8 | Food | Information on food (vegetables, fruits, measurements etc.) |
| 9 | Games | Games data (game, score, pegi_rating etc.) |
| 10 | Personal | Personal data (name, surname, age, email etc.) |
| 11 | Text | Text data (sentence, title etc.) |
| 12 | Transport | Dummy data about transport (truck model, car etc.) |
| 13 | Science | Scientific data (scientist, math_formula etc.) |
| 14 | Structured | Structured data (html, css etc.) |
| 15 | Internet | Internet data (facebook, twitter etc.) |
| 16 | Hardware | The data about the hardware (resolution, cpu, graphics etc.) |
| 17 | Numbers | Numerical data (floats, primes, digit etc.) |
| 18 | Path | Provides methods and property for generate paths. |
| 19 | UnitSytem | Provides names of unit systems in international format |
| 20 | Generic | All at once |
| 21 | Cryptographic | Cryptographic data |
You also can add custom provider to Generic(), using add_provider() method:
>>> import mimesis
>>> generic = mimesis.Generic('en')
>>> class SomeProvider(object):
... class Meta:
... name = "some_provider"
...
... def hello(self):
... return "Hello!"
>>> class Another(object):
... def bye(self):
... return "Bye!"
>>> generic.add_provider(SomeProvider)
>>> generic.add_provider(Another)
>>> generic.some_provider.hello()
'Hello!'
>>> generic.another.bye()
'Bye!'or multiple custom providers using method add_providers():
>>> generic.add_providers(SomeProvider, Another)Too lazy to search for data? No problem, we found them for you and collected them here: mimesis-extra-data.
Some countries have data types specific to that country. For example social security numbers (SSN) in the United States of America (en), and cadastro de pessoas físicas (CPF) in Brazil (pt-br).
If you would like to use these country-specific providers, then you must import them explicitly:
>>> from mimesis import Generic
>>> from mimesis.builtins import BrazilSpecProvider
>>> generic = Generic('pt-br')
>>> generic.add_provider(BrazilSpecProvider)
>>> generic.brazil_provider.cpf()
'696.441.186-00'You can use Mimesis during development and testing of applications built on a variety of frameworks. Here is an example of integration with a Flask application:
class Patient(db.Model):
id = db.Column(db.Integer, primary_key=True)
full_name = db.Column(db.String(100))
blood_type = db.Column(db.String(64))
def __init__(self, **kwargs):
super(Patient, self).__init__(**kwargs)
@staticmethod
def populate(count=500, locale=None):
import mimesis
person = mimesis.Personal(locale=locale)
for _ in range(count):
patient = Patient(
full_name=person.full_name('female'),
blood_type=person.blood_type(),
)
db.session.add(patient)
try:
db.session.commit()
except IntegrityError:
db.session.rollback()Just run shell mode and do following:
>>> Patient().populate(count=1000, locale='en')Mimesis support generating data by schema:
>>> from mimesis.schema import Schema
>>> schema = Schema('en')
>>> schema.load(schema={
... "id": "cryptographic.uuid",
... "name": "text.word",
... "version": "development.version",
... "owner": {
... "email": "personal.email",
... "token": "cryptographic.token",
... "creator": "personal.full_name"
... }
... }).create(iterations=2)
>>> # or you can load data from json file:
>>> schema.load(path='schema.json').create(iterations=2)Result:
[
{
"id": "790cce21-5f75-2652-2ee2-f9d90a26c43d",
"name": "container",
"owner": {
"email": "anjelica8481@outlook.com",
"token": "0bf924125640c46aad2a860f40ec4b7f33a516c497957abd70375c548ed56978",
"creator": "Ileen Ellis"
},
"version": "4.11.6"
},
...
]
If your locale belongs to the family of Cyrillic languages, but you need latinized locale-specific data, then you can use special decorator which help you romanize your data. At this moment it's works only for Russian and Ukrainian:
>>> from mimesis.decorators import romanized
>>> @romanized('ru')
... def russian_name():
... return 'Вероника Денисова'
>>> russian_name()
'Veronika Denisova'- Fork it
- Take a look at contributions guidelines
- Create your feature branch (
git checkout -b feature/new_locale) - Commit your changes (
git commit -am 'Add new_locale') - Add yourself to list of contributors
- Push to the branch (
git push origin feature/new_locale) - Create a new Pull Request
Mimesis is licensed under the MIT License. See LICENSE for more information.
The authors assume no responsibility for how you use this library data generated by it. This library is designed only for developers with good intentions. Do not use the data generated with Mimesis for illegal purposes.