What is wrong in this code, I'm getting 6,7 compilation error?

Question

#code by sanjay kazi.

def rev(z): # function to reverse string or list
return z[::-1]

num = str(input())

t = list(rev(num))
p = []
for l in t:
p.append(int(l))
# p is inverted list of input

for i in range(len(p)):
if (i+1)%2==0:
p[i] = p[i]*2

# multiplies every 2nd number with 2

for j in range(len(p)):
if p[j] > 9:
p[j] = p[j]-9

# substraction of 9 from numbers greater than 9

sum = 0
for k in p:
sum = sum + k

if sum % 10 == 0:
print("valid")
else:
print("not valid")

Answer 1

Hi can you please specify what are the inputs , and what are the outputs?

Answer 2

Actually its a challenge problem and 5 cases are satisfied but last two case are producing error.

Answer 3

You can find it in medium level challenge problem. "Credit card validator "

Answer 4

You should then add code coach in the tags,also reframe your question like why the last two 6 and 7 test cases are failing ,I think it's a pro question so I can't help further

Answer 5

Okay cool