str.isidentifier() Return true if the string is a valid identifier according to the language definition, section Identifiers

str.rpartition(sep) Split the string at the last occurrence of sep, and return a 3-tuple containing the part before

bytearray.count(sub[, start[, end]]) Return the number of non-overlapping occurrences of subsequence sub in the range

bytes.translate(table[, delete]) bytearray.translate(table[, delete]) Return a copy of the bytes or bytearray object

issubset(other) set <= other Test whether every element in the set is in other.

bytes.center(width[, fillbyte]) bytearray.center(width[, fillbyte]) Return a copy of the object centered in a sequence

str.islower() Return true if all cased characters [4] in the string are lowercase and there is at least one cased character

static bytes.maketrans(from, to) static bytearray.maketrans(from, to) This static method returns a translation table

bytes.istitle() bytearray.istitle() Return true if the sequence is ASCII titlecase and the sequence is not empty

bytes.rsplit(sep=None, maxsplit=-1) bytearray.rsplit(sep=None, maxsplit=-1) Split the binary sequence into subsequences