range question plz explain this question and its solution

Question

3. Write a program that prints following shape, (Hint: Use for loop inside another for loop)
*
**
***
****
*****

Answer 1

Thanks @swim

Answer 2

for i in range(1,6):
s = "*"
for j in range(i):
s += '*'
print(s)
i did the solution but showing some unexpected result. As we know the range exclude the end point but i am getting the result with end point. pla explain.
my result is:
**
***
****
*****
******