Faker

Faker is a Python package that generates fake data for you.

View the Project on GitHub joke2k/faker


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Faker

Faker is a Python package that generates fake data for you. Whether you need to bootstrap your database, create good-looking XML documents, fill-in your persistence to stress test it, or anonymize data taken from a production service, Faker is for you.

Faker is heavily inspired by PHP's Faker, Perl's Data::Faker, and by ruby's Faker.

Basic Usage

Install with pip:

pip install fake-factory

Use faker.Factory.create() to create and initialize a faker generator, which can generate data by accessing properties named after the type of data you want.

    from faker import Factory

    faker = Factory.create()

    faker.name()
    # 'Lucy Cechtelar'

    faker.address()
    # "426 Jordy Lodge
    #  Cartwrightshire, SC 88120-6700"

    faker.text()
    # Sint velit eveniet. Rerum atque repellat voluptatem quia rerum. Numquam excepturi
    # beatae sint laudantium consequatur. Magni occaecati itaque sint et sit tempore. Nesciunt
    # amet quidem. Iusto deleniti cum autem ad quia aperiam.
    # A consectetur quos aliquam. In iste aliquid et aut similique suscipit. Consequatur qui
    # quaerat iste minus hic expedita. Consequuntur error magni et laboriosam. Aut aspernatur
    # voluptatem sit aliquam. Dolores voluptatum est.
    # Aut molestias et maxime. Fugit autem facilis quos vero. Eius quibusdam possimus est.
    # Ea quaerat et quisquam. Deleniti sunt quam. Adipisci consequatur id in occaecati.
    # Et sint et. Ut ducimus quod nemo ab voluptatum.

Each call to method faker.name() yealds a different (random) result. This is because faker uses __getattr__ magic, and forwards faker.Genarator.method_name()' calls tofaker.Generator.format(method_name)`.

for i in range(0,10):
  print faker.name()

    # Adaline Reichel
    # Dr. Santa Prosacco DVM
    # Noemy Vandervort V
    # Lexi O'Conner
    # Gracie Weber
    # Roscoe Johns
    # Emmett Lebsack
    # Keegan Thiel
    # Wellington Koelpin II
    # Ms. Karley Kiehn V

Formatters

Each of the generator properties (like name, address, and lorem) are called "formatters". A faker generator has many of them, packaged in "providers". Here is a list of the bundled formatters in the default locale.

faker.providers.File:

fake.mime_type()                   # video/webm

faker.providers.user_agent:

fake.chrome()                      # Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_8_4) AppleWebKit/5341 (KHTML, like Gecko) Chrome/13.0.803.0 Safari/5341
fake.firefox()                     # Mozilla/5.0 (Windows 95; sl-SI; rv:1.9.1.20) Gecko/2012-01-06 22:35:05 Firefox/3.8
fake.internet_explorer()           # Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.1)
fake.linux_platform_token()        # X11; Linux x86_64
fake.linux_processor()             # x86_64
fake.mac_platform_token()          # Macintosh; U; PPC Mac OS X 10_7_6
fake.mac_processor()                # U; PPC
fake.opera()                       # Opera/9.41 (Windows CE; it-IT) Presto/2.9.168 Version/12.00
fake.safari()                      # Mozilla/5.0 (Windows; U; Windows NT 5.1) AppleWebKit/534.34.4 (KHTML, like Gecko) Version/5.0 Safari/534.34.4
fake.user_agent()                  # Mozilla/5.0 (iPod; U; CPU iPhone OS 3_2 like Mac OS X; en-US) AppleWebKit/531.15.3 (KHTML, like Gecko) Version/4.0.5 Mobile/8B119 Safari/6531.15.3
fake.windows_platform_token()      # Windows 98; Win 9x 4.90

faker.providers.phone_number:

fake.phone_number()                # (593)652-1880

faker.providers.miscelleneous:

fake.boolean()                     # True
fake.country_code()                # BB
fake.language_code()               # fr
fake.locale()                      # pt_GN
fake.md5()                         # ab9d3552b5c6e68714c04c35725ba73c
fake.null_boolean()                # True
fake.sha1()                        # 3fc2ede28f2596050f9a94c15c59b800175409d0
fake.sha256()                      # f06561a971d6b1306ecef60be336556d6de2540c2d0d2158f4d0ea3f212cd740

faker.providers.internet:

fake.company_email()               # ggreenfelder@ortizmedhurst.com
fake.domain_name()                 # mayer.com
fake.domain_word()                 # gusikowski
fake.email()                       # gbrakus@johns.net
fake.free_email()                  # abbey60@yahoo.com
fake.free_email_domain()           # hotmail.com
fake.ipv4()                        # 81.132.249.71
fake.ipv6()                        # 4c55:8c8b:54b5:746d:44ed:c7ab:486a:a50e
fake.safe_email()                  # amalia49@example.com
fake.slug()                        # TypeError
fake.tld()                         # net
fake.uri()                         # http://www.parker.com/
fake.uri_extension()               # .asp
fake.uri_page()                    # terms
fake.uri_path()                    # explore/list/app
fake.url()                         # http://dubuque.info/
fake.user_name()                   # goodwin.edwin

faker.providers.company:

fake.bs()                          # maximize end-to-end infrastructures
fake.catch_phrase()                # Multi-tiered analyzing instructionset
fake.company()                     # Stanton-Luettgen
fake.company_suffix()              # Group

faker.providers.date_time:

fake.am_pm()                       # AM
fake.century()                     # IX
fake.date()                        # 1985-02-17
fake.date_time()                   # 1995-06-08 14:46:50
fake.date_time_ad()                # 1927-12-17 23:08:46
fake.date_time_between()           # 1999-08-22 22:49:52
fake.date_time_this_century()      # 1999-07-24 23:35:49
fake.date_time_this_decade()       # 2008-01-27 01:08:37
fake.date_time_this_month()        # 2012-11-12 14:13:04
fake.date_time_this_year()         # 2012-05-19 00:40:00
fake.day_of_month()                # 23
fake.day_of_week()                 # Friday
fake.iso8601()                     # 2009-04-09T21:30:02
fake.month()                       # 03
fake.month_name()                  # April
fake.time()                        # 06:16:50
fake.timezone()                    # America/Noronha
fake.unix_time()                   # 275630166
fake.year()                        # 2002

faker.providers.person:

fake.first_name()                  # Elton
fake.last_name()                   # Schowalter
fake.name()                        # Susan Pagac III
fake.prefix()                      # Ms.
fake.suffix()                      # V

faker.providers.address:

fake.address()                     # 044 Watsica Brooks
                                     West Cedrickfort, SC 35023-5157
fake.building_number()             # 319
fake.city()                        # Kovacekfort
fake.city_prefix()                 # New
fake.city_suffix()                 # ville
fake.country()                     # Monaco
fake.geo_coordinate()              # 148.031951
fake.latitude()                    # 154.248666
fake.longitude()                   # 109.920335
fake.postcode()                    # 82402-3206
fake.secondary_address()           # Apt. 230
fake.state()                       # Nevada
fake.state_abbr()                  # NC
fake.street_address()              # 793 Haskell Stravenue
fake.street_name()                 # Arvilla Valley
fake.street_suffix()               # Crescent

faker.providers.lorem:

fake.paragraph()                   # Itaque quia harum est autem inventore quisquam eaque. Facere mollitia repudiandae
                                     qui et voluptas. Consequatur sunt ullam blanditiis aliquam veniam illum voluptatem.
fake.paragraphs()                  # ['Alias porro soluta eum voluptate. Iste consequatur qui non nam.',
                                        'Id eum sint eius earum veniam fugiat ipsum et. Et et occaecati at labore
                                        amet et. Rem velit inventore consequatur facilis. Eum consequatur consequatur
                                        quis nobis.', 'Harum autem autem totam ex rerum adipisci magnam adipisci.
                                        Qui modi eos eum vel quisquam. Tempora quas eos dolorum sint voluptatem
                                        tenetur cum. Recusandae ducimus deleniti magnam ullam adipisci ipsa.']
fake.sentence()                    # Eum magni soluta unde minus nobis.
fake.sentences()                   # ['Ipsam eius aut veritatis iusto.',
                                        'Occaecati libero a aut debitis sunt quas deserunt aut.',
                                        'Culpa dolor voluptatum laborum at et enim.']
fake.text()                        # Dicta quo eius possimus quae eveniet cum nihil. Saepe sint non nostrum.
                                     Sequi est sit voluptate et eos eum et. Pariatur non sunt distinctio magnam.
fake.word()                        # voluptas
fake.words()                       # ['optio', 'et', 'voluptatem']

Localization

faker.Factory can take a locale as an argument, to return localized data. If no localized provider is found, the factory fallbacks to the default locale (en_EN).

from faker import Factory
fake = Factory.create('it_IT')
for i in range(0,10):
    print fake.name()

# Elda Palumbo
# Pacifico Giordano
# Sig. Avide Guerra
# Yago Amato
# Eustachio Messina
# Dott. Violante Lombardo
# Sig. Alighieri Monti
# Costanzo Costa
# Nazzareno Barbieri
# Max Coppola

You can check available Faker locales in the source code, under the providers package. The localization of Faker is an ongoing process, for which we need your help. Don't hesitate to create localized providers to your own locale and submit a PR!

Using from shell

In a python environment with faker installed you can use it with:

python -m faker [option] [*args]

[option]:

[*args]: pass value to formatter (actually only strings)

$ python -m faker address
968 Bahringer Garden Apt. 722
Kristinaland, NJ 09890

Seeding the Generator

You may want to get always the same generated data - for instance when using Faker for unit testing purposes. The generator offers a seed() method, which seeds the random number generator. Calling the same script twice with the same seed produces the same results.

from faker import Faker
fake = Faker()
fake.seed(4321)

print fake.name()   # Margaret Boehm

Tests

Run tests:

$ python setup.py test

or

$ python -m unittest -v faker.tests

Write documentation for providers:

$ python -m faker > docs.txt

License

Faker is released under the MIT Licence. See the bundled LICENSE file for details.

Credits