Nested lambda statements when sorting lists

Question

I wish to sort the below list first by the number, then by the text.

lst = [\'b-3\', \'a-2\', \'c-4\', \'d-2\']

# result:
# [\'a-2\', \'d-2\', \'b-3\', \'c-         


        

Answer 1

lst = ['b-3', 'a-2', 'c-4', 'd-2']
def xform(l):
    return list(map(lambda x: x[1] + '-' + x[0], list(map(lambda x: x.split('-'), lst))))
lst = sorted(xform(lst))
print(xform(lst))

See it here I think @jpp has a better solution, but a fun little brainteaser :-)