There are balls with numbers from 1 to 9 written on them. Find how many ways there are when you pick 3 of them in order to make 19 by adding the numbers on the ball.
1 9 1 [OP_LIST_ARANGE] 3 [OP_LIST_GET_PERM] [OP_LIST_NUM2SUM] 19 [OP_LIST_FIND_NUM]
var_a = 1
var_b = 9
var_c = 1
list_a = [i for i in range(var_a, var_b + 1, var_c)]
var_d = 3
list_b = [str(i) for i in list_a]
list_b = list(itertools.permutations(list_b, var_d))
list_b = [''.join(num_list) for num_list in list_b]
list_b = [str_num for str_num in list_b if str_num[0] != '0']
list_b = [float(i) for i in list_b]
list_c=[]
for i in list_b:
    var_e = 0
    i = int(i)
    while i//10 > 0:
        var_e = var_e + i%10
        i = i//10
    var_e = var_e + i%10
    list_c.append(var_e)
var_f = 19
var_g = 0
var_f = int(var_f)
for i in list_c:
    i = int(i)
    if i == var_f:
        var_g = var_g + 1
print(int(var_g))