In Python please:
Assume the availability of a function is_prime. Assume a variable n has been associated with positive integer. Write the statements needed to compute the sum of the first n prime numbers. The sum should be associated with the variable total.
Note: is_prime takes an integer as a parameter and returns True if and only if that integer is prime.
Please fix this wrong code.

n >0
total =0
while total <= n:
if is_prime(n):
total = total+ n
if total <= n:
total = n
n = n + 1