ll = ["", 1, 2.0, "abada", 3]
result = []
for i in ll:
    try:
        val = int(i)
        result.append(val)
    except:
        pass
print(result)

  
some_lst = [1, 2.0, 'строка', '', None, ['1', '2', '3']]
 
def is_num(num):
    if isinstance(num, int) or isinstance(num, float):
        return True
 
sort_lst = [i for i in some_lst if is_num(i)]
print(sort_lst)
 
sort_lst_2 = [i for i in some_lst if not is_num(i)]
 
print(sort_lst_2)

 
[1, 2.0]
['строка', '', None, ['1', '2', '3']]

Process finished with exit code 0