Question

What is the best way to convert a string on the format "1-2-3-4" to a list [1, 2, 3, 4]? The string may also be empty, in which case the conversion should return an empty list [].

This is what I have:

map(lambda x: int(x),
    filter(lambda x: x != '',
           "1-2-3-4".split('-')))

EDIT: Sorry all of those who answered before I corrected my question, it was unclear for the first minute or so.

Answer 1

You can use a list comprehension to make it shorter. Use the if to account for the empty string.

the_string = '1-2-3-4'

[int(x) for x in the_string.split('-') if x != '']