def and return problem

Question

what is the highest number output?
def print_nums(x):
for i in range(x):
print(i)
return
print_nums(10)
###the answer is 0
here is my solution thought:
range 0.1.2.3.4.5.6.7.8.9,
why is 0?

what is the output?
def func(x):
res = 0
for i in range(x):
res += i
return res

print(func(4))
###the answer is 6
Range 0.1.2.3
res=4+0, 4+1, 4+2, 4+3
then why 6?

Answer 1

for i in range(x):
print(i)
Here if x=10 then I values in range 0 to x-1.
So 0 to 9.

range(min, max) if you not specify min, value then it starts from 0.
If you want start from 1, (or some specific min value, mention there as)
write range(1,10)

In next,
res=0
for i in range(4)
res+=i
Here, i is 0 to 3. #(4-1)
Each time I added to res..
0+0=0.
0+1=1
1+2=3
3+3=6

Answer 2

Jayakrishna thanks, I got it now

Answer 3

Arvonce You're welcome