oh thank you i could not understand where is the problem now i solved it , thank you dear!

i got this error when list is empty or there is one number in list,so i tried to fix it with if lst == [] or len(lst) ==1 return 0 but it doesnt return 0 ,though in pycharm it returns 0,here i got this error,dont know how to fix can anyone help?

Traceback (most recent call last):
File "/workspace/default/.venv/lib/python3.11/site-packages/codewars_test/test_framework.py", line 112, in wrapper
func()
File "/workspace/default/tests.py", line 47, in _
test_split_list([], 0)
File "/workspace/default/tests.py", line 9, in test_split_list
a, b = split_list(xs[:])
^^^^
TypeError: cannot unpack non-iterable int object

i can not understand it says:
A pangram is a sentence that contains every single letter of the alphabet at least once. For example, the sentence "The quick brown fox jumps over the lazy dog" is a pangram.
So in this sentence the letter 'h' is int the first word 'The' and in the 7th word also 'the lazy' The and the , h and e used two times why is this sentence a pangram?