Sum of prime numbers from m to n in Python

Problem Statement:

In the sum of prime numbers from m to n in python, we need to take two integers as input and should print the sum of prime numbers that come in the range of these two numbers including them. For example, in 2 and 7, the total sum is 17.

Code to find the sum of prime numbers from m to n in python:

n1 = int(input('Enter 1st number: '))
n2 = int(input('Enter 2nd number: '))
def prime(i):
    flag = 0
    for j in range(2, i//2+1):
        if i%j==0:
            flag = 1
    if flag==0:
        return True
    return False
total = 0
for i in range(n1, n2+1):
    if prime(i):
        total = total + i
print('Prime numbers sum between', n1, 'and', n2, 'is', total)

Output:

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