split(), join()

Returns a list of tokens: String.split( [delimiter [,maxsplit]])

>>> lst = ['a', 'b', 'c']
>>> str = ";".join(lst)
>>> str
'a;b;c'
>>> str.split(';')
['a', 'b', 'c']
>>> str.split(';',1)
['a', 'b;c']