config.py 文件源码

def register_extra_parameters(self):
        extra_parameters = None
        cwd = os.getcwd()
        sys.path.append(cwd)
        path_index = len(sys.path) - 1
        try:
            from dallinger_experiment import extra_parameters
        except ImportError:
            try:
                exp = imp.load_source('dallinger_experiment', "dallinger_experiment.py")
                extra_parameters = getattr(exp, 'extra_parameters', None)
            except IOError:
                pass
            if extra_parameters is None:
                try:
                    # We may be in the original source directory, try experiment.py
                    exp = imp.load_source('dallinger_experiment', "experiment.py")
                    extra_parameters = getattr(exp, 'extra_parameters', None)
                except IOError:
                    pass
        if extra_parameters is not None and getattr(extra_parameters, 'loaded', None) is None:
            extra_parameters()
            extra_parameters.loaded = True
        # Remove path element we added
        sys.path.pop(path_index)