a simpler way to sum up each value

# total payments = the sum of monthly payments
# object-level method for calculation in Loan class
    def totalPayments(self):
        # the monthly payment might be different depending on the period
        t = 0  # initialize the period
        m_sum = 0  # initialize the sum
        while t < self._term:  # run until we reach the total term
            m_sum += self.monthlyPayment(t)  # sum up each monthly payment
            t += 1  # go to next period
        return m_sum

monthly payment might be different depending on different period, so instead of simply multiplying it by term, I chose to sum up each payment individually. Is there a easier way of doing this?
I thought to do this at first

sum(payment for payment in self.monthlyPayment(t) if term <= t)

But t is not initialized and won’t be incremented to calculate each payment. So I was wondering if there is any easier approach that could possibly achieve the above functionality in a single line or so?

>Solution :

Your variable t increments by 1 each time, so why don’t you use a range object?

for t in range(0, self._term+1):
    ...

So, if you want to mantain your comprehension, the best way should be this:

sum(self.monthlyPayment(t) for t in range(self._term))