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from settings import code_evaluators
import importlib
registry = None
def set_registry():
global registry
registry = _LanguageRegistry()
def get_registry():
return registry
class _LanguageRegistry(object):
def __init__(self):
self._register = {}
for language, module in code_evaluators.iteritems():
self._register[language] = None
# Public Protocol ##########
def get_class(self, language):
""" Get the code evaluator class for the given language """
if not self._register.get(language):
self._register[language] = code_evaluators.get(language)
cls = self._register[language]
module_name, class_name = cls.rsplit(".", 1)
# load the module, will raise ImportError if module cannot be loaded
get_module = importlib.import_module(module_name)
# get the class, will raise AttributeError if class cannot be found
get_class = getattr(get_module, class_name)
return get_class
def register(self, language, class_name):
""" Register a new code evaluator class for language"""
self._register[language] = class_name
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