I believe list comprehensions would be much more readable if they were written the other way round: [for x in [for s in strList: if isNumeric(s): parseInt(

I believe list comprehensions would be much more readable if they were written the other way round: [for x in [for s in strList: if isNumeric(s): parseInt(s)]: if x != 0: x] Nesting them is still ugly, but can often be avoided using an assignment expression: [for s in strList: if isNumeric(s): if (x := parseInt(s)) != 0: x]