PYTHON

sum of 1 to n number in python

#1 + 2 + 3 + 4 + ........... + n = ?
l = int(input("Enter the range = "))
sum = 0
for x in range(1, l+1):
    sum += x
    if x != l:
        print(x, "+ ", end='')
    else:
        print(x, end='')

print(" =", sum)

program to find sum till n natural numbers in python

#sum of natural number till n.
n=int(input('no. :'))
gross=0
no=0
while no < n:
    no+=1
    gross+=no
    print('no.', no ,'sum of n', gross)
print('no.',n,'total',gross)