Can you please explain me the whole process of the output?

Question

num=[1,3,5,6]
for i in num:
for c in range (i):
print (c)

Answer 1

for i in num : #list value are taken into i in each iteration one after other, so for first iteration, i = 1, next 3, next 5, next 6

Inner loop
i=1
for c in range(i) : #means 0 to i-1 times iterates, I not inclusive. So

c=0 to i-1=0
Print 0

i=3:
c= 0 to 3-1=2
prints 0, 1, 2 #separelate lines.

i=5
c=0 to 5-1=4
Prints 0,1,2,3,4

i=6
c=0 to 6-1= 5
Prints 0,1,2,3,4,5

Output: #each value printed in separate lines but for your convenience, final output:

0
0 1 2
0 1 2 3 4
0 1 2 3 4 5