I tried writing a code to find the sum of first n numbers but its not working. Please help me I'm a noob

Question

n=int(input("enter n-"))
for i in range(0,n):
m+=i
print(m)

Answer 1

~ swim ~ thank you so much ma man (can you explain why only 0 tho?)

Answer 2

~ swim ~ kay man tqsm

Answer 3

Oh yeah! so should it be 1 if i want the factorial?