Question: 
Write a function to find sum of the numbers in a list between the indices of a specified range.


Model's Code:
def sum_range_list(lst, start, end):
    return sum(lst[start:end+1])



Sample Correct Code:
def sum_range_list(list1, m, n):                                                                                                                                                                                                
    sum_range = 0                                                                                                                                                                                                         
    for i in range(m, n+1, 1):                                                                                                                                                                                        
        sum_range += list1[i]                                                                                                                                                                                                  
    return sum_range   


Asserts:
assert sum_range_list( [2,1,5,6,8,3,4,9,10,11,8,12],8,10)==29
assert sum_range_list( [2,1,5,6,8,3,4,9,10,11,8,12],5,7)==16
assert sum_range_list( [2,1,5,6,8,3,4,9,10,11,8,12],7,10)==38


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 170 of 974: 125/170 (73.52941176470588%): success