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tothemax
2026-05-18 14:15:59 +07:00
parent b0ce866a2f
commit b9054d178e
5775 changed files with 832577 additions and 38 deletions
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.venv/lib/python3.12/site-packages/faker/proxy.py Normal file
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from __future__ import annotations
import copy
import functools
import re
from collections import OrderedDict
from random import Random
from typing import Any, Callable, Pattern, Sequence, TypeVar
from .config import DEFAULT_LOCALE
from .exceptions import UniquenessException
from .factory import Factory
from .generator import Generator
from .typing import SeedType
from .utils.distribution import choices_distribution
_UNIQUE_ATTEMPTS = 1000
RetType = TypeVar("RetType")
class Faker:
"""Proxy class capable of supporting multiple locales"""
cache_pattern: Pattern = re.compile(r"^_cached_\w*_mapping$")
generator_attrs = [
attr for attr in dir(Generator) if not attr.startswith("__") and attr not in ["seed", "seed_instance", "random"]
]
def __init__(
self,
locale: str | Sequence[str] | dict[str, int | float] | None = None,
providers: list[str] | None = None,
generator: Generator | None = None,
includes: list[str] | None = None,
use_weighting: bool = True,
**config: Any,
) -> None:
self._factory_map: OrderedDict[str, Generator | Faker] = OrderedDict()
self._weights = None
self._unique_proxy = UniqueProxy(self)
self._optional_proxy = OptionalProxy(self)
if isinstance(locale, str):
locales = [locale.replace("-", "_")]
# This guarantees a FIFO ordering of elements in `locales` based on the final
# locale string while discarding duplicates after processing
elif isinstance(locale, (list, tuple, set)):
locales = []
for code in locale:
if not isinstance(code, str):
raise TypeError(f'The locale "{str(code)}" must be a string.')
final_locale = code.replace("-", "_")
if final_locale not in locales:
locales.append(final_locale)
elif isinstance(locale, (OrderedDict, dict)):
assert all(isinstance(v, (int, float)) for v in locale.values())
odict = OrderedDict()
for k, v in locale.items():
key = k.replace("-", "_")
odict[key] = v
locales = list(odict.keys())
self._weights = list(odict.values())
else:
locales = [DEFAULT_LOCALE]
if len(locales) == 1:
self._factory_map[locales[0]] = Factory.create(
locales[0],
providers,
generator,
includes,
use_weighting=use_weighting,
**config,
)
else:
for locale in locales:
self._factory_map[locale] = Faker(
locale,
providers,
generator,
includes,
use_weighting=use_weighting,
**config,
)
self._locales = locales
self._factories = list(self._factory_map.values())
def __dir__(self):
attributes = set(super().__dir__())
for factory in self.factories:
attributes |= {attr for attr in dir(factory) if not attr.startswith("_")}
return sorted(attributes)
def __getitem__(self, locale: str) -> Faker:
if locale.replace("-", "_") in self.locales and len(self.locales) == 1:
return self
instance = self._factory_map[locale.replace("-", "_")]
assert isinstance(instance, Faker) # for mypy
return instance
def __getattribute__(self, attr: str) -> Any:
"""
Handles the "attribute resolution" behavior for declared members of this proxy class
The class method `seed` cannot be called from an instance.
:param attr: attribute name
:return: the appropriate attribute
"""
if attr == "seed":
msg = "Calling `.seed()` on instances is deprecated. Use the class method `Faker.seed()` instead."
raise TypeError(msg)
else:
return super().__getattribute__(attr)
def __getattr__(self, attr: str) -> Any:
"""
Handles cache access and proxying behavior
:param attr: attribute name
:return: the appropriate attribute
"""
if len(self._factories) == 1:
return getattr(self._factories[0], attr)
elif attr in self.generator_attrs:
msg = "Proxying calls to `%s` is not implemented in multiple locale mode." % attr
raise NotImplementedError(msg)
elif self.cache_pattern.match(attr):
msg = "Cached attribute `%s` does not exist" % attr
raise AttributeError(msg)
else:
factory = self._select_factory(attr)
return getattr(factory, attr)
def __deepcopy__(self, memodict):
cls = self.__class__
result = cls.__new__(cls)
memodict[id(self)] = result
result._locales = copy.deepcopy(self._locales, memodict)
result._factory_map = copy.deepcopy(self._factory_map, memodict)
result._factories = list(result._factory_map.values())
result._weights = copy.deepcopy(self._weights, memodict)
result._unique_proxy = UniqueProxy(result)
result._unique_proxy._seen = {k: {result._unique_proxy._sentinel} for k in self._unique_proxy._seen.keys()}
result._optional_proxy = OptionalProxy(result)
return result
def __setstate__(self, state: Any) -> None:
self.__dict__.update(state)
@property
def unique(self) -> UniqueProxy:
return self._unique_proxy
@property
def optional(self) -> OptionalProxy:
return self._optional_proxy
def _select_factory(self, method_name: str) -> Factory:
"""
Returns a random factory that supports the provider method
:param method_name: Name of provider method
:return: A factory that supports the provider method
"""
factories, weights = self._map_provider_method(method_name)
if len(factories) == 0:
msg = f"No generator object has attribute {method_name!r}"
raise AttributeError(msg)
elif len(factories) == 1:
return factories[0]
if weights:
factory = self._select_factory_distribution(factories, weights)
else:
factory = self._select_factory_choice(factories)
return factory
def _select_factory_distribution(self, factories, weights):
return choices_distribution(factories, weights, self.factories[0].random, length=1)[0]
def _select_factory_choice(self, factories):
return self._factories[0].random.choice(factories)
def _map_provider_method(self, method_name: str) -> tuple[list[Factory], list[float] | None]:
"""
Creates a 2-tuple of factories and weights for the given provider method name
The first element of the tuple contains a list of compatible factories.
The second element of the tuple contains a list of distribution weights.
:param method_name: Name of provider method
:return: 2-tuple (factories, weights)
"""
# Return cached mapping if it exists for given method
attr = f"_cached_{method_name}_mapping"
if hasattr(self, attr):
return getattr(self, attr)
# Create mapping if it does not exist
if self._weights:
value = [
(factory, weight)
for factory, weight in zip(self.factories, self._weights)
if hasattr(factory, method_name)
]
factories, weights = zip(*value)
mapping = list(factories), list(weights)
else:
value = [factory for factory in self.factories if hasattr(factory, method_name)] # type: ignore
mapping = value, None # type: ignore
# Then cache and return results
setattr(self, attr, mapping)
return mapping
@classmethod
def seed(cls, seed: SeedType | None = None) -> None:
"""
Hashables the shared `random.Random` object across all factories
:param seed: seed value
"""
Generator.seed(seed)
def seed_instance(self, seed: SeedType | None = None) -> None:
"""
Creates and seeds a new `random.Random` object for each factory
:param seed: seed value
"""
for factory in self._factories:
factory.seed_instance(seed)
def seed_locale(self, locale: str, seed: SeedType | None = None) -> None:
"""
Creates and seeds a new `random.Random` object for the factory of the specified locale
:param locale: locale string
:param seed: seed value
"""
self._factory_map[locale.replace("-", "_")].seed_instance(seed)
@property
def random(self) -> Random:
"""
Proxies `random` getter calls
In single locale mode, this will be proxied to the `random` getter
of the only internal `Generator` object. Subclasses will have to
implement desired behavior in multiple locale mode.
"""
if len(self._factories) == 1:
return self._factories[0].random
else:
msg = "Proxying `random` getter calls is not implemented in multiple locale mode."
raise NotImplementedError(msg)
@random.setter
def random(self, value: Random) -> None:
"""
Proxies `random` setter calls
In single locale mode, this will be proxied to the `random` setter
of the only internal `Generator` object. Subclasses will have to
implement desired behavior in multiple locale mode.
"""
if len(self._factories) == 1:
self._factories[0].random = value
else:
msg = "Proxying `random` setter calls is not implemented in multiple locale mode."
raise NotImplementedError(msg)
@property
def locales(self) -> list[str]:
return list(self._locales)
@property
def weights(self) -> list[int | float] | None:
return self._weights
@property
def factories(self) -> list[Generator | Faker]:
return self._factories
def items(self) -> list[tuple[str, Generator | Faker]]:
return list(self._factory_map.items())
class UniqueProxy:
def __init__(self, proxy: Faker, excluded_types: tuple[type, ...] = ()):
self._proxy = proxy
self._seen: dict = {}
self._sentinel = object()
self._excluded_types = excluded_types
def clear(self) -> None:
self._seen = {}
def exclude_types(self, types: list[type]) -> UniqueProxy:
"""Return new UniqueProxy excluding specified types from uniqueness checks.
Args:
types: List of types to exclude from uniqueness enforcement
Returns:
New UniqueProxy instance with excluded types configured
Example:
>>> fake = Faker()
>>> # Bools won't enforce uniqueness, but other types will
>>> proxy = fake.unique.exclude_types([bool])
>>> proxy.pybool() # Can return duplicates
>>> proxy.name() # Still enforces uniqueness
"""
new_proxy = UniqueProxy(self._proxy, tuple(types))
new_proxy._seen = self._seen
new_proxy._sentinel = self._sentinel
return new_proxy
def __getitem__(self, locale: str) -> UniqueProxy:
locale_proxy = self._proxy[locale]
unique_proxy = UniqueProxy(locale_proxy, self._excluded_types)
unique_proxy._seen = self._seen
unique_proxy._sentinel = self._sentinel
return unique_proxy
def __getattr__(self, name: str) -> Any:
obj = getattr(self._proxy, name)
if callable(obj):
return self._wrap(name, obj)
else:
raise TypeError("Accessing non-functions through .unique is not supported.")
def __getstate__(self):
# Copy the object's state from self.__dict__ which contains
# all our instance attributes. Always use the dict.copy()
# method to avoid modifying the original state.
state = self.__dict__.copy()
return state
def __setstate__(self, state):
self.__dict__.update(state)
def _make_hashable(self, value: Any) -> Any:
"""Convert unhashable types (e.g., dict) to a hashable representation."""
if isinstance(value, dict):
return tuple(sorted((k, self._make_hashable(v)) for k, v in value.items()))
elif isinstance(value, list):
return tuple(self._make_hashable(v) for v in value)
elif isinstance(value, set):
return frozenset(self._make_hashable(v) for v in value)
return value
def _wrap(self, name: str, function: Callable) -> Callable:
@functools.wraps(function)
def wrapper(*args, **kwargs):
# If types are excluded, call function once to check return type
if self._excluded_types:
retval = function(*args, **kwargs)
# Skip uniqueness check if type is excluded
if isinstance(retval, self._excluded_types):
return retval
# If not excluded, continue with normal uniqueness logic
# but we already have a value, so we'll use it if unique
hashable_retval = self._make_hashable(retval)
key = (name, args, tuple(sorted(kwargs.items())))
generated = self._seen.setdefault(key, {self._sentinel})
# Check if this first value is unique
if hashable_retval not in generated:
generated.add(hashable_retval)
return retval
# Not unique, continue with normal loop below
else:
# No exclusions, use original logic
key = (name, args, tuple(sorted(kwargs.items())))
generated = self._seen.setdefault(key, {self._sentinel})
retval = self._sentinel
hashable_retval = self._make_hashable(retval)
# Original uniqueness logic (with potential first attempt already done)
for i in range(_UNIQUE_ATTEMPTS):
if hashable_retval not in generated:
break
retval = function(*args, **kwargs)
hashable_retval = self._make_hashable(retval)
else:
raise UniquenessException(f"Got duplicated values after {_UNIQUE_ATTEMPTS:,} iterations.")
generated.add(hashable_retval)
return retval
return wrapper
class OptionalProxy:
"""
Return either a fake value or None, with a customizable probability.
"""
def __init__(self, proxy: Faker):
self._proxy = proxy
def __getattr__(self, name: str) -> Any:
obj = getattr(self._proxy, name)
if callable(obj):
return self._wrap(name, obj)
else:
raise TypeError("Accessing non-functions through .optional is not supported.")
def __getstate__(self):
# Copy the object's state from self.__dict__ which contains
# all our instance attributes. Always use the dict.copy()
# method to avoid modifying the original state.
state = self.__dict__.copy()
return state
def __setstate__(self, state):
self.__dict__.update(state)
def _wrap(self, name: str, function: Callable[..., RetType]) -> Callable[..., RetType | None]:
@functools.wraps(function)
def wrapper(*args: Any, prob: float = 0.5, **kwargs: Any) -> RetType | None:
if not 0 < prob <= 1.0:
raise ValueError("prob must be between 0 and 1")
return function(*args, **kwargs) if self._proxy.boolean(chance_of_getting_true=int(prob * 100)) else None
return wrapper