def __contains__(self, key):
if isinstance(key, int):
newbyteskey = newbytes([key])
# Don't use isinstance() here because we only want to catch
# newbytes, not Python 2 str:
elif type(key) == newbytes:
newbyteskey = key
else:
newbyteskey = newbytes(key)
return issubset(list(newbyteskey), list(self))
def __contains__(self, key):
errmsg = "'in <string>' requires string as left operand, not {0}"
# Don't use isinstance() here because we only want to catch
# newstr, not Python 2 unicode:
if type(key) == newstr:
newkey = key
elif isinstance(key, unicode) or isinstance(key, bytes) and not isnewbytes(key):
newkey = newstr(key)
else:
raise TypeError(errmsg.format(type(key)))
return issubset(list(newkey), list(self))
