environment.py 文件源码

def topickle(self, filename):
        # remove unpicklable attributes
        warnfunc = self._warnfunc
        self.set_warnfunc(None)
        values = self.config.values
        del self.config.values
        domains = self.domains
        del self.domains
        picklefile = open(filename, 'wb')
        # remove potentially pickling-problematic values from config
        for key, val in list(vars(self.config).items()):
            if key.startswith('_') or \
               isinstance(val, types.ModuleType) or \
               isinstance(val, types.FunctionType) or \
               isinstance(val, class_types):
                del self.config[key]
        try:
            pickle.dump(self, picklefile, pickle.HIGHEST_PROTOCOL)
        finally:
            picklefile.close()
        # reset attributes
        self.domains = domains
        self.config.values = values
        self.set_warnfunc(warnfunc)

    # --------- ENVIRONMENT INITIALIZATION -------------------------------------