how can i remove all commas at the end of the string?

I want to remove all the commas that are in last of every string i tried s.rstrip it work only for the last comma

l = [['kjkng,rkggg,,,,,,,,,,', 'aaaa, , ', 'sssssss, , , '],['rjfjrejn lelkkd ,,,,,'], ['fffff , , ,'],[], .....]]

i want result as

l = [['kjkng,rkggg', 'aaaa', 'sssssss'],['rjfjrejn lelkkd'],['fffff'],[], .....]]

>Solution :

let’s look around the cases:

1. List of strings

in this case the simplest solution is to do a list comprehension and use the str.rstrip(", ") to remove commas and spaces at the end of the string.

l = [x.rstrip(", ") for x in l]

2. Nested List of strings

in this case, illustrated as an example, you can do in a recursive way and a linear way

• recursive

do a function wich takes a list and returns another list like in the code:

def remcommas(lst:list):
    final = []
    for x in lst:
        if x.isinstance(x,list):
            x = remcommas(x)
        final.append(x)
    return final

this works if your list is nested but it’s not the optimal solution.

• linear

this will still use str.rstrip() and work with list of list but it has a constrain:

• this will work on lists with a structure like what you have (list[list[str]])

But it’s probably the best for now that i can think of, uses list comprehension:

final = [x.rstrip(", ") for x in lst for lst in l]