1919import re
2020import sys
2121import warnings
22- from typing import Union , TypeVar , List , Tuple , Dict
22+ from typing import Dict , List , Tuple , Union
2323from urllib .parse import (
2424 parse_qs ,
2525 ParseResult ,
@@ -220,7 +220,11 @@ def __call__(self, var, cast=None, default=NOTSET, parse_default=False):
220220 def __contains__ (self , var ):
221221 return var in self .ENVIRON
222222
223- def str (self , var , default : Union [str , NoValue ] = NOTSET , multiline = False ) -> str :
223+ def str (
224+ self ,
225+ var ,
226+ default : Union [str , NoValue ] = NOTSET ,
227+ multiline = False ) -> str :
224228 """
225229 :rtype: str
226230 """
@@ -229,7 +233,11 @@ def str(self, var, default: Union[str, NoValue] = NOTSET, multiline=False) -> st
229233 return re .sub (r'(\\r)?\\n' , r'\n' , value )
230234 return value
231235
232- def bytes (self , var , default : Union [bytes , NoValue ] = NOTSET , encoding = 'utf8' ) -> bytes :
236+ def bytes (
237+ self ,
238+ var ,
239+ default : Union [bytes , NoValue ] = NOTSET ,
240+ encoding = 'utf8' ) -> bytes :
233241 """
234242 :rtype: bytes
235243 """
@@ -299,7 +307,11 @@ def url(self, var, default=NOTSET) -> ParseResult:
299307 parse_default = True
300308 )
301309
302- def db_url (self , var = DEFAULT_DATABASE_ENV , default = NOTSET , engine = None ) -> Dict :
310+ def db_url (
311+ self ,
312+ var = DEFAULT_DATABASE_ENV ,
313+ default = NOTSET ,
314+ engine = None ) -> Dict :
303315 """Returns a config dictionary, defaulting to DATABASE_URL.
304316
305317 The db method is an alias for db_url.
@@ -313,7 +325,11 @@ def db_url(self, var=DEFAULT_DATABASE_ENV, default=NOTSET, engine=None) -> Dict:
313325
314326 db = db_url
315327
316- def cache_url (self , var = DEFAULT_CACHE_ENV , default = NOTSET , backend = None ) -> Dict :
328+ def cache_url (
329+ self ,
330+ var = DEFAULT_CACHE_ENV ,
331+ default = NOTSET ,
332+ backend = None ) -> Dict :
317333 """Returns a config dictionary, defaulting to CACHE_URL.
318334
319335 The cache method is an alias for cache_url.
@@ -327,7 +343,11 @@ def cache_url(self, var=DEFAULT_CACHE_ENV, default=NOTSET, backend=None) -> Dict
327343
328344 cache = cache_url
329345
330- def email_url (self , var = DEFAULT_EMAIL_ENV , default = NOTSET , backend = None ) -> Dict :
346+ def email_url (
347+ self ,
348+ var = DEFAULT_EMAIL_ENV ,
349+ default = NOTSET ,
350+ backend = None ) -> Dict :
331351 """Returns a config dictionary, defaulting to EMAIL_URL.
332352
333353 The email method is an alias for email_url.
@@ -341,7 +361,11 @@ def email_url(self, var=DEFAULT_EMAIL_ENV, default=NOTSET, backend=None) -> Dict
341361
342362 email = email_url
343363
344- def search_url (self , var = DEFAULT_SEARCH_ENV , default : Union [Dict , NoValue ] = NOTSET , engine = None ) -> Dict :
364+ def search_url (
365+ self ,
366+ var = DEFAULT_SEARCH_ENV ,
367+ default : Union [Dict , NoValue ] = NOTSET ,
368+ engine = None ) -> Dict :
345369 """Returns a config dictionary, defaulting to SEARCH_URL.
346370
347371 :rtype: dict
@@ -351,8 +375,11 @@ def search_url(self, var=DEFAULT_SEARCH_ENV, default: Union[Dict, NoValue] = NOT
351375 engine = engine
352376 )
353377
354- def channels_url (self , var = DEFAULT_CHANNELS_ENV , default : Union [Dict , NoValue ] = NOTSET ,
355- backend = None ) -> Dict :
378+ def channels_url (
379+ self ,
380+ var = DEFAULT_CHANNELS_ENV ,
381+ default : Union [Dict , NoValue ] = NOTSET ,
382+ backend = None ) -> Dict :
356383 """Returns a config dictionary, defaulting to CHANNELS_URL.
357384
358385 :rtype: dict
@@ -364,7 +391,11 @@ def channels_url(self, var=DEFAULT_CHANNELS_ENV, default: Union[Dict, NoValue] =
364391
365392 channels = channels_url
366393
367- def path (self , var , default : Union ['Path' , NoValue ] = NOTSET , ** kwargs ) -> 'Path' :
394+ def path (
395+ self ,
396+ var ,
397+ default : Union ['Path' , NoValue ] = NOTSET ,
398+ ** kwargs ) -> 'Path' :
368399 """
369400 :rtype: Path
370401 """
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