galaxy-obo / lib / galaxy / util /

The default branch has multiple heads

Objects with No values
from galaxy.datatypes.metadata import MetadataCollection
from galaxy.datatypes.registry import Registry

class RecursiveNone:
    def __str__( self ):
        return "None"
    def __repr__( self ):
        return str( self )
    def __getattr__( self, name ):
        value = RecursiveNone()
        setattr( self, name, value )
        return value
    def __nonzero__( self ):
        return False

class NoneDataset( RecursiveNone ):
    def __init__( self, datatypes_registry = None, ext = 'data', dbkey = '?' ):
        self.ext = self.extension = ext
        self.dbkey = dbkey
        if datatypes_registry is None:
            # Default Value Required for unit tests
            datatypes_registry = Registry()
        self.datatype = datatypes_registry.get_datatype_by_extension( ext )
        self._metadata = None
        self.metadata = MetadataCollection( self )
    def __getattr__( self, name ):
        return "None"
    def missing_meta( self ):
        return False
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