\eFdZddlZddlZdZdZdZdZd dZd dZd Z y) z0 Import related utilities and helper functions. Nc |jd\}}}t| ttj||S#t $r5t d|dtjtjdwxYw)zYReturns a class from a string including module and class. .. versionadded:: 0.3 .zClass z cannot be found ()) rpartition __import__getattrsysmodulesAttributeError ImportError tracebackformat_exceptionexc_info) import_strmod_str_sep class_strs 8/usr/lib/python3/dist-packages/oslo_utils/importutils.py import_classrs| *44S9GT9wIs{{7+Y77 I$$55s||~FHI IIs ?>A=c$t||i|S)zLImport a class and return an instance of it. .. versionadded:: 0.3 )r)rargskwargss r import_objectr's $< #T 4V 44cl|d|} t|}||i|S#t$rt|}YwxYw)aTries to import object from default namespace. Imports a class and return an instance of it, first by trying to find the class in a default namespace, then failing back to a full path if not found in the default namespace. .. versionadded:: 0.3 .. versionchanged:: 2.6 Don't capture :exc:`ImportError` when instanciating the object, only when importing the object class. r)rr ) name_spacerrr import_valueclss rimport_object_nsr/sJ)*5L'<(    ':&'s 33c>t|tj|S)z0Import a module. .. versionadded:: 0.3 )rr r )rs r import_moduler!Ds z ;;z ""rctdd|zvr td|d|}|rdj||f}t|S)aKImport a versioned module in format {module}.v{version][.{submodule}]. :param module: the module name. :param version: the version number. :param submodule: the submodule name. :raises ValueError: For any invalid input. .. versionadded:: 0.3 .. versionchanged:: 3.17 Added *module* parameter. rz%sz2Parameter version shouldn't include character '.'.z.v) ValueErrorjoinr!)moduleversion submodule module_strs rimport_versioned_moduler)MsG dWnMNN#W-JXXz956  $$rc< t|S#t$r|cYSwxYw)z6Try to import a module and if it fails return default.)r!r )rdefaults r try_importr,ds&Z(( s ch|f|zD]}t|}|s|cStdt|z)aTry to import a module from a list of modules. :param modules: A list of modules to try and import :returns: The first module found that can be imported :raises ImportError: If no modules can be imported from list .. versionadded:: 3.8 z-Unable to import any modules from the list %s)r,r str)r%r module_nameimported_modules r import_anyr1lsKy7*# $[1 " "# E'l# $$r)N) __doc__r r rrrr!r)r,r1rrr4s6   I5 *#%.$r