python split and strip

Question

hello
what does [-1] do in this code

lres = res.split(',')[-1].strip()

Answer 1

[-1] is to get the last items in iterable
( An iterable is string, list, tuple or dict )
i.e. If a is "Kartikey"
a[-1] is y

Answer 2

-1 finds the last thing in your list and performs an action on it.

Answer 3

You can use strip like this.
text = "!!!Hello ,,world..."

for i in text:
if i.strip('!,.'): #Only strip lets you removing every chars you want from everywhere.
print(i,end="")
print()
for j in text:
if j.rstrip('.'): #rstrip lets you removing chars from right side
print(j,end="")
print()
for k in text:
if k.lstrip('!'): #lstrip lets you removing chars from left side
print(k,end="")