721     # "bytes" is also a typing shortcut for bytes, bytearray, and memoryview

   721     # "bytes" is also a typing shortcut for bytes, bytearray, and memoryview

   722     if isinstance(s, memoryview):

   722     if isinstance(s, memoryview):

   723         s = bytes(s)

   723         s = bytes(s)

   724     # call underlying function of s.encode('string_escape') directly for

   724     # call underlying function of s.encode('string_escape') directly for

   725     # Python 3 compatibility

   725     # Python 3 compatibility

   726     return codecs.escape_encode(s)[0]  # pytype: disable=module-attr

   727     return codecs.escape_encode(s)[0]  # pytype: disable=module-attr

   727 

   729 

   728 

   730 

   729 def unescapestr(s: bytes) -> bytes:

   731 def unescapestr(s: bytes) -> bytes:

   730     return codecs.escape_decode(s)[0]  # pytype: disable=module-attr

   733     return codecs.escape_decode(s)[0]  # pytype: disable=module-attr

   731 

   735 

   732 

   736 

   733 def forcebytestr(obj):

   737 def forcebytestr(obj):

   734     """Portably format an arbitrary object (e.g. exception) into a byte

   738     """Portably format an arbitrary object (e.g. exception) into a byte

   735     string."""

   739     string."""