forked from joke2k/faker
/
factory.py
129 lines (99 loc) · 4.32 KB
/
factory.py
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import locale as pylocale
import logging
import sys
from importlib import import_module
from faker.config import AVAILABLE_LOCALES, DEFAULT_LOCALE, PROVIDERS
from faker.generator import Generator
from faker.utils.loading import list_module
logger = logging.getLogger(__name__)
# identify if python is being run in interactive mode. If so, disable logging.
inREPL = bool(getattr(sys, 'ps1', False))
if inREPL:
logger.setLevel(logging.CRITICAL)
else:
logger.debug('Not in REPL -> leaving logger event level as is.')
class Factory:
@classmethod
def create(
cls,
locale=None,
providers=None,
generator=None,
includes=None,
# Should we use weightings (more realistic) or weight every element equally (faster)?
# By default, use weightings for backwards compatibility & realism
use_weighting=True,
**config):
if includes is None:
includes = []
# fix locale to package name
locale = locale.replace('-', '_') if locale else DEFAULT_LOCALE
locale = pylocale.normalize(locale).split('.')[0]
if locale not in AVAILABLE_LOCALES:
msg = 'Invalid configuration for faker locale `{}`'.format(locale)
raise AttributeError(msg)
config['locale'] = locale
config['use_weighting'] = use_weighting
providers = providers or PROVIDERS
providers += includes
faker = generator or Generator(**config)
for prov_name in providers:
if prov_name == 'faker.providers':
continue
prov_cls, lang_found = cls._get_provider_class(prov_name, locale)
provider = prov_cls(faker)
provider.__use_weighting__ = use_weighting
provider.__provider__ = prov_name
provider.__lang__ = lang_found
faker.add_provider(provider)
return faker
@classmethod
def _get_provider_class(cls, provider, locale=''):
provider_class = cls._find_provider_class(provider, locale)
if provider_class:
return provider_class, locale
if locale and locale != DEFAULT_LOCALE:
# fallback to default locale
provider_class = cls._find_provider_class(provider, DEFAULT_LOCALE)
if provider_class:
return provider_class, DEFAULT_LOCALE
# fallback to no locale
provider_class = cls._find_provider_class(provider)
if provider_class:
return provider_class, None
msg = 'Unable to find provider `{}` with locale `{}`'.format(
provider, locale)
raise ValueError(msg)
@classmethod
def _find_provider_class(cls, provider_path, locale=None):
provider_module = import_module(provider_path)
if getattr(provider_module, 'localized', False):
logger.debug('Looking for locale `{}` in provider `{}`.'.format(
locale, provider_module.__name__))
available_locales = list_module(provider_module)
if not locale or locale not in available_locales:
unavailable_locale = locale
locale = getattr(
provider_module, 'default_locale', DEFAULT_LOCALE)
logger.debug('Specified locale `{}` is not available for '
'provider `{}`. Locale reset to `{}` for this '
'provider.'.format(
unavailable_locale, provider_module.__name__, locale),
)
else:
logger.debug('Provider `{}` has been localized to `{}`.'.format(
provider_module.__name__, locale))
path = "{provider_path}.{locale}".format(
provider_path=provider_path,
locale=locale,
)
provider_module = import_module(path)
else:
logger.debug('Provider `{}` does not feature localization. '
'Specified locale `{}` is not utilized for this '
'provider.'.format(
provider_module.__name__, locale),
)
if locale is not None:
provider_module = import_module(provider_path)
return provider_module.Provider