Python string.join ( list ) last entry with “and”

Question

What is an elegant way to join a list of sentence parts so that the result is \"a, b, and c\" where the list is [ \'a\', \'b\', \'c\' ]? Specifying

Answer 1

l = ['a','b','c']
if len(l) > 1:
    print ",".join(k[:-1]) +  " and " + k[-1]
else:print l[0]

exapmles:

l = ['a','b','c']
a,b and c

l = ['a','b']
a and b

l=['a']
a