DEFAULT_CLASS_MAP

DEFAULT_CLASS_MAP = mappingproxy({'data.frame': <function dataframe_constructor>, 'factor': <function factor_constructor>, 'ordered': <function ordered_constructor>, 'ts': <function ts_constructor>, 'srcref': <function srcref_constructor>, 'srcfile': <function srcfile_constructor>, 'srcfilecopy': <function srcfilecopy_constructor>})