/
__init__.py
480 lines (400 loc) · 19.8 KB
/
__init__.py
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import re
import string
from collections import OrderedDict
from faker.utils.distribution import choices_distribution, choices_distribution_unique
_re_hash = re.compile(r'#')
_re_perc = re.compile(r'%')
_re_excl = re.compile(r'!')
_re_at = re.compile(r'@')
_re_qm = re.compile(r'\?')
_re_cir = re.compile(r'\^')
class BaseProvider:
__provider__ = 'base'
__lang__ = None
__use_weighting__ = False
# Locales supported by Linux Mint from `/usr/share/i18n/SUPPORTED`
language_locale_codes = {
'aa': ('DJ', 'ER', 'ET'), 'af': ('ZA',), 'ak': ('GH',), 'am': ('ET',),
'an': ('ES',), 'apn': ('IN',),
'ar': ('AE', 'BH', 'DJ', 'DZ', 'EG', 'EH', 'ER', 'IL', 'IN',
'IQ', 'JO', 'KM', 'KW', 'LB', 'LY', 'MA', 'MR', 'OM',
'PS', 'QA', 'SA', 'SD', 'SO', 'SS', 'SY', 'TD', 'TN',
'YE'),
'as': ('IN',), 'ast': ('ES',), 'ayc': ('PE',), 'az': ('AZ', 'IN'),
'be': ('BY',), 'bem': ('ZM',), 'ber': ('DZ', 'MA'), 'bg': ('BG',),
'bhb': ('IN',), 'bho': ('IN',), 'bn': ('BD', 'IN'), 'bo': ('CN', 'IN'),
'br': ('FR',), 'brx': ('IN',), 'bs': ('BA',), 'byn': ('ER',),
'ca': ('AD', 'ES', 'FR', 'IT'), 'ce': ('RU',), 'ckb': ('IQ',),
'cmn': ('TW',), 'crh': ('UA',), 'cs': ('CZ',), 'csb': ('PL',),
'cv': ('RU',), 'cy': ('GB',), 'da': ('DK',),
'de': ('AT', 'BE', 'CH', 'DE', 'LI', 'LU'), 'doi': ('IN',),
'dv': ('MV',), 'dz': ('BT',), 'el': ('GR', 'CY'),
'en': ('AG', 'AU', 'BW', 'CA', 'DK', 'GB', 'HK', 'IE', 'IN', 'NG',
'NZ', 'PH', 'SG', 'US', 'ZA', 'ZM', 'ZW'),
'eo': ('US',),
'es': ('AR', 'BO', 'CL', 'CO', 'CR', 'CU', 'DO', 'EC', 'ES', 'GT',
'HN', 'MX', 'NI', 'PA', 'PE', 'PR', 'PY', 'SV', 'US', 'UY', 'VE',
), 'et': ('EE',), 'eu': ('ES', 'FR'), 'fa': ('IR',),
'ff': ('SN',), 'fi': ('FI',), 'fil': ('PH',), 'fo': ('FO',),
'fr': ('CA', 'CH', 'FR', 'LU'), 'fur': ('IT',), 'fy': ('NL', 'DE'),
'ga': ('IE',), 'gd': ('GB',), 'gez': ('ER', 'ET'), 'gl': ('ES',),
'gu': ('IN',), 'gv': ('GB',), 'ha': ('NG',), 'hak': ('TW',),
'he': ('IL',), 'hi': ('IN',), 'hne': ('IN',), 'hr': ('HR',),
'hsb': ('DE',), 'ht': ('HT',), 'hu': ('HU',), 'hy': ('AM',),
'ia': ('FR',), 'id': ('ID',), 'ig': ('NG',), 'ik': ('CA',),
'is': ('IS',), 'it': ('CH', 'IT'), 'iu': ('CA',), 'iw': ('IL',),
'ja': ('JP',), 'ka': ('GE',), 'kk': ('KZ',), 'kl': ('GL',),
'km': ('KH',), 'kn': ('IN',), 'ko': ('KR',), 'kok': ('IN',),
'ks': ('IN',), 'ku': ('TR',), 'kw': ('GB',), 'ky': ('KG',),
'lb': ('LU',), 'lg': ('UG',), 'li': ('BE', 'NL'), 'lij': ('IT',),
'ln': ('CD',), 'lo': ('LA',), 'lt': ('LT',), 'lv': ('LV',),
'lzh': ('TW',), 'mag': ('IN',), 'mai': ('IN',), 'mg': ('MG',),
'mhr': ('RU',), 'mi': ('NZ',), 'mk': ('MK',), 'ml': ('IN',),
'mn': ('MN',), 'mni': ('IN',), 'mr': ('IN',), 'ms': ('MY',),
'mt': ('MT',), 'my': ('MM',), 'nan': ('TW',), 'nb': ('NO',),
'nds': ('DE', 'NL'), 'ne': ('NP',), 'nhn': ('MX',),
'niu': ('NU', 'NZ'), 'nl': ('AW', 'BE', 'NL'), 'nn': ('NO',),
'nr': ('ZA',), 'nso': ('ZA',), 'oc': ('FR',), 'om': ('ET', 'KE'),
'or': ('IN',), 'os': ('RU',), 'pa': ('IN', 'PK'),
'pap': ('AN', 'AW', 'CW'), 'pl': ('PL',), 'ps': ('AF',),
'pt': ('BR', 'PT'), 'quz': ('PE',), 'raj': ('IN',), 'ro': ('RO',),
'ru': ('RU', 'UA'), 'rw': ('RW',), 'sa': ('IN',), 'sat': ('IN',),
'sc': ('IT',), 'sd': ('IN', 'PK'), 'se': ('NO',), 'shs': ('CA',),
'si': ('LK',), 'sid': ('ET',), 'sk': ('SK',), 'sl': ('SI',),
'so': ('DJ', 'ET', 'KE', 'SO'), 'sq': ('AL', 'ML'), 'sr': ('ME', 'RS'),
'ss': ('ZA',), 'st': ('ZA',), 'sv': ('FI', 'SE'), 'sw': ('KE', 'TZ'),
'szl': ('PL',), 'ta': ('IN', 'LK'), 'tcy': ('IN',), 'te': ('IN',),
'tg': ('TJ',), 'th': ('TH',), 'the': ('NP',), 'ti': ('ER', 'ET'),
'tig': ('ER',), 'tk': ('TM',), 'tl': ('PH',), 'tn': ('ZA',),
'tr': ('CY', 'TR'), 'ts': ('ZA',), 'tt': ('RU',), 'ug': ('CN',),
'uk': ('UA',), 'unm': ('US',), 'ur': ('IN', 'PK'), 'uz': ('UZ',),
've': ('ZA',), 'vi': ('VN',), 'wa': ('BE',), 'wae': ('CH',),
'wal': ('ET',), 'wo': ('SN',), 'xh': ('ZA',), 'yi': ('US',),
'yo': ('NG',), 'yue': ('HK',), 'zh': ('CN', 'HK', 'SG', 'TW'),
'zu': ('ZA',),
}
def __init__(self, generator):
self.generator = generator
def locale(self):
"""Generate a random underscored i18n locale code (e.g. en_US).
:sample:
"""
language_code = self.language_code()
return language_code + '_' + self.random_element(
BaseProvider.language_locale_codes[language_code],
)
def language_code(self):
"""Generate a random i18n language code (e.g. en).
:sample:
"""
return self.random_element(BaseProvider.language_locale_codes.keys())
def random_int(self, min=0, max=9999, step=1):
"""Generate a random integer between two integers ``min`` and ``max`` inclusive
while observing the provided ``step`` value.
This method is functionally equivalent to randomly sampling an integer
from the sequence ``range(min, max + 1, step)``.
:sample:
:sample size=10: min=0, max=15
:sample size=10: min=0, max=15, step=3
"""
return self.generator.random.randrange(min, max + 1, step)
def random_digit(self):
"""Generate a random digit (0 to 9).
:sample:
"""
return self.generator.random.randint(0, 9)
def random_digit_not_null(self):
"""Generate a random non-zero digit (1 to 9).
:sample:
"""
return self.generator.random.randint(1, 9)
def random_digit_or_empty(self):
"""Generate a random digit (0 to 9) or an empty string.
This method will return an empty string 50% of the time,
and each digit has a 1/20 chance of being generated.
:sample size=10:
"""
if self.generator.random.randint(0, 1):
return self.generator.random.randint(0, 9)
else:
return ''
def random_digit_not_null_or_empty(self):
"""Generate a random non-zero digit (1 to 9) or an empty string.
This method will return an empty string 50% of the time,
and each digit has a 1/18 chance of being generated.
:sample size=10:
"""
if self.generator.random.randint(0, 1):
return self.generator.random.randint(1, 9)
else:
return ''
def random_number(self, digits=None, fix_len=False):
"""Generate a random integer according to the following rules:
- If ``digits`` is ``None`` (default), its value will be set to a random
integer from 1 to 9.
- If ``fix_len`` is ``False`` (default), all integers that do not exceed
the number of ``digits`` can be generated.
- If ``fix_len`` is ``True``, only integers with the exact number of
``digits`` can be generated.
:sample: fix_len=False
:sample: fix_len=True
:sample: digits=3
:sample: digits=3, fix_len=False
:sample: digits=3, fix_len=True
"""
if digits is None:
digits = self.random_digit_not_null()
if digits < 0:
raise ValueError("The digit parameter must be greater than or equal to 0.")
if fix_len:
if digits > 0:
return self.generator.random.randint(
pow(10, digits - 1), pow(10, digits) - 1)
else:
raise ValueError("A number of fixed length cannot have less than 1 digit in it.")
else:
return self.generator.random.randint(0, pow(10, digits) - 1)
def random_letter(self):
"""Generate a random ASCII letter (a-z and A-Z).
:sample:
"""
return self.generator.random.choice(
getattr(string, 'letters', string.ascii_letters))
def random_letters(self, length=16):
"""Generate a list of random ASCII letters (a-z and A-Z) of the specified ``length``.
:sample:
:sample: length=10
"""
return self.random_choices(
getattr(string, 'letters', string.ascii_letters),
length=length,
)
def random_lowercase_letter(self):
"""Generate a random lowercase ASCII letter (a-z).
:sample:
"""
return self.generator.random.choice(string.ascii_lowercase)
def random_uppercase_letter(self):
"""Generate a random uppercase ASCII letter (A-Z).
:sample:
"""
return self.generator.random.choice(string.ascii_uppercase)
def random_elements(self, elements=('a', 'b', 'c'), length=None, unique=False,
use_weighting=None):
"""Generate a list of randomly sampled objects from ``elements``.
Set ``unique`` to ``False`` for random sampling with replacement, and set ``unique`` to
``True`` for random sampling without replacement.
If ``length`` is set to ``None`` or is omitted, ``length`` will be set to a random
integer from 1 to the size of ``elements``.
The value of ``length`` cannot be greater than the number of objects
in ``elements`` if ``unique`` is set to ``True``.
The value of ``elements`` can be any sequence type (``list``, ``tuple``, ``set``,
``string``, etc) or an ``OrderedDict`` type. If it is the latter, the keys will be
used as the objects for sampling, and the values will be used as weighted probabilities
if ``unique`` is set to ``False``. For example:
.. code-block:: python
# Random sampling with replacement
fake.random_elements(
elements=OrderedDict([
("variable_1", 0.5), # Generates "variable_1" 50% of the time
("variable_2", 0.2), # Generates "variable_2" 20% of the time
("variable_3", 0.2), # Generates "variable_3" 20% of the time
("variable_4": 0.1), # Generates "variable_4" 10% of the time
]), unique=False
)
# Random sampling without replacement (defaults to uniform distribution)
fake.random_elements(
elements=OrderedDict([
("variable_1", 0.5),
("variable_2", 0.2),
("variable_3", 0.2),
("variable_4": 0.1),
]), unique=True
)
:sample: elements=('a', 'b', 'c', 'd'), unique=False
:sample: elements=('a', 'b', 'c', 'd'), unique=True
:sample: elements=('a', 'b', 'c', 'd'), length=10, unique=False
:sample: elements=('a', 'b', 'c', 'd'), length=4, unique=True
:sample: elements=OrderedDict([
("a", 0.45),
("b", 0.35),
("c", 0.15),
("d", 0.05),
]), length=20, unique=False
:sample: elements=OrderedDict([
("a", 0.45),
("b", 0.35),
("c", 0.15),
("d", 0.05),
]), unique=True
"""
use_weighting = (use_weighting
if use_weighting is not None
else self.__use_weighting__)
if isinstance(elements, dict) and not isinstance(elements, OrderedDict):
raise ValueError("Use OrderedDict only to avoid dependency on PYTHONHASHSEED (See #363).")
fn = choices_distribution_unique if unique else choices_distribution
if length is None:
length = self.generator.random.randint(1, len(elements))
if unique and length > len(elements):
raise ValueError(
"Sample length cannot be longer than the number of unique elements to pick from.")
if isinstance(elements, dict):
if not hasattr(elements, "_key_cache"):
elements._key_cache = tuple(elements.keys())
choices = elements._key_cache
probabilities = tuple(elements.values()) if use_weighting else None
else:
if unique:
# shortcut
return self.generator.random.sample(elements, length)
choices = elements
probabilities = None
return fn(
tuple(choices),
probabilities,
self.generator.random,
length=length,
)
def random_choices(self, elements=('a', 'b', 'c'), length=None):
"""Generate a list of objects randomly sampled from ``elements`` with replacement.
For information on the ``elements`` and ``length`` arguments, please refer to
:meth:`random_elements() <faker.providers.BaseProvider.random_elements>` which
is used under the hood with the ``unique`` argument explicitly set to ``False``.
:sample: elements=('a', 'b', 'c', 'd')
:sample: elements=('a', 'b', 'c', 'd'), length=10
:sample: elements=OrderedDict([
("a", 0.45),
("b", 0.35),
("c", 0.15),
("d", 0.05),
])
:sample: elements=OrderedDict([
("a", 0.45),
("b", 0.35),
("c", 0.15),
("d", 0.05),
]), length=20
"""
return self.random_elements(elements, length, unique=False)
def random_element(self, elements=('a', 'b', 'c')):
"""Generate a randomly sampled object from ``elements``.
For information on the ``elements`` argument, please refer to
:meth:`random_elements() <faker.providers.BaseProvider.random_elements>` which
is used under the hood with the ``unique`` argument set to ``False`` and the
``length`` argument set to ``1``.
:sample: elements=('a', 'b', 'c', 'd')
:sample size=10: elements=OrderedDict([
("a", 0.45),
("b", 0.35),
("c", 0.15),
("d", 0.05),
])
"""
return self.random_elements(elements, length=1)[0]
def random_sample(self, elements=('a', 'b', 'c'), length=None):
"""Generate a list of objects randomly sampled from ``elements`` without replacement.
For information on the ``elements`` and ``length`` arguments, please refer to
:meth:`random_elements() <faker.providers.BaseProvider.random_elements>` which
is used under the hood with the ``unique`` argument explicitly set to ``True``.
:sample: elements=('a', 'b', 'c', 'd', 'e', 'f')
:sample: elements=('a', 'b', 'c', 'd', 'e', 'f'), length=3
"""
return self.random_elements(elements, length, unique=True)
def randomize_nb_elements(
self,
number=10,
le=False,
ge=False,
min=None,
max=None):
"""Generate a random integer near ``number`` according to the following rules:
- If ``le`` is ``False`` (default), allow generation up to 140% of ``number``.
If ``True``, upper bound generation is capped at 100%.
- If ``ge`` is ``False`` (default), allow generation down to 60% of ``number``.
If ``True``, lower bound generation is capped at 100%.
- If a numerical value for ``min`` is provided, generated values less than ``min``
will be clamped at ``min``.
- If a numerical value for ``max`` is provided, generated values greater than
``max`` will be clamped at ``max``.
- If both ``le`` and ``ge`` are ``True``, the value of ``number`` will automatically
be returned, regardless of the values supplied for ``min`` and ``max``.
:sample: number=100
:sample: number=100, ge=True
:sample: number=100, ge=True, min=120
:sample: number=100, le=True
:sample: number=100, le=True, max=80
:sample: number=79, le=True, ge=True, min=80
"""
if le and ge:
return number
_min = 100 if ge else 60
_max = 100 if le else 140
nb = int(number * self.generator.random.randint(_min, _max) / 100)
if min is not None and nb < min:
nb = min
if max is not None and nb > max:
nb = max
return nb
def numerify(self, text='###'):
"""Generate a string with each placeholder in ``text`` replaced according
to the following rules:
- Number signs ('#') are replaced with a random digit (0 to 9).
- Percent signs ('%') are replaced with a random non-zero digit (1 to 9).
- Exclamation marks ('!') are replaced with a random digit or an empty string.
- At symbols ('@') are replaced with a random non-zero digit or an empty string.
Under the hood, this method uses :meth:`random_digit() <faker.providers.BaseProvider.random_digit>`,
:meth:`random_digit_not_null() <faker.providers.BaseProvider.random_digit_not_null>`,
:meth:`random_digit_or_empty() <faker.providers.BaseProvider.random_digit_or_empty>`,
and :meth:`random_digit_not_null_or_empty() <faker.providers.BaseProvider.random_digit_not_null_or_empty>`
to generate the random values.
:sample: text='Intel Core i%-%%##K vs AMD Ryzen % %%##X'
:sample: text='!!! !!@ !@! !@@ @!! @!@ @@! @@@'
"""
text = _re_hash.sub(
lambda x: str(self.random_digit()),
text)
text = _re_perc.sub(
lambda x: str(self.random_digit_not_null()),
text)
text = _re_excl.sub(
lambda x: str(self.random_digit_or_empty()),
text)
text = _re_at.sub(
lambda x: str(self.random_digit_not_null_or_empty()),
text)
return text
def lexify(self, text='????', letters=string.ascii_letters):
"""Generate a string with each question mark ('?') in ``text``
replaced with a random character from ``letters``.
By default, ``letters`` contains all ASCII letters, uppercase and lowercase.
:sample: text='Random Identifier: ??????????'
:sample: text='Random Identifier: ??????????', letters='ABCDE'
"""
return _re_qm.sub(lambda x: self.random_element(letters), text)
def bothify(self, text='## ??', letters=string.ascii_letters):
"""Generate a string with each placeholder in ``text`` replaced according
to the following rules:
- Number signs ('#') are replaced with a random digit (0 to 9).
- Question marks ('?') are replaced with a random character from ``letters``.
By default, ``letters`` contains all ASCII letters, uppercase and lowercase.
Under the hood, this method uses :meth:`numerify() <faker.providers.BaseProvider.numerify>` and
and :meth:`lexify() <faker.providers.BaseProvider.lexify>` to generate random values for number
signs and question marks respectively.
:sample: letters='ABCDE'
:sample: text='Product Number: ????-########'
:sample: text='Product Number: ????-########', letters='ABCDE'
"""
return self.lexify(self.numerify(text), letters=letters)
def hexify(self, text='^^^^', upper=False):
"""Generate a string with each circumflex ('^') in ``text``
replaced with a random hexadecimal character.
By default, ``upper`` is set to False. If set to ``True``, output
will be formatted using uppercase hexadecimal characters.
:sample: text='MAC Address: ^^:^^:^^:^^:^^:^^'
:sample: text='MAC Address: ^^:^^:^^:^^:^^:^^', upper=True
"""
letters = string.hexdigits[:-6]
if upper:
letters = letters.upper()
return _re_cir.sub(lambda x: self.random_element(letters), text)