def b64encode(s, altchars=None):
"""Encode bytes using the standard Base64 alphabet.
Argument ``s`` is a :term:`bytes-like object` to encode.
Optional ``altchars`` must be a byte string of length 2 which specifies
an alternative alphabet for the '+' and '/' characters. This allows an
application to e.g. generate url or filesystem safe Base64 strings.
The result is returned as a :class:`bytes` object.
"""
if altchars is not None:
altchars = _get_bytes(altchars)
assert len(altchars) == 2, repr(altchars)
return builtin_encode(s, altchars)
def b64encode(s, altchars=None):
"""Encode bytes using the standard Base64 alphabet.
Argument ``s`` is a :term:`bytes-like object` to encode.
Optional ``altchars`` must be a byte string of length 2 which specifies
an alternative alphabet for the '+' and '/' characters. This allows an
application to e.g. generate url or filesystem safe Base64 strings.
The result is returned as a :class:`bytes` object.
"""
if altchars is not None:
altchars = _get_bytes(altchars)
assert len(altchars) == 2, repr(altchars)
if version_info < (3, 0):
if isinstance(s, text_type):
raise TypeError('a bytes-like object is required, not \'' +
type(s).__name__ + '\'')
return builtin_encode(s, altchars)