Why Does Range(Start, End) Not Include End

Why does range(start, end) not include end?

Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains 10 elements which equals len(range(0, 10)). Remember that programmers prefer 0-based indexing.

Also, consider the following common code snippet:

for i in range(len(li)):
    pass

Could you see that if range() went up to exactly len(li) that this would be problematic? The programmer would need to explicitly subtract 1. This also follows the common trend of programmers preferring for(int i = 0; i < 10; i++) over for(int i = 0; i <= 9; i++).

If you are calling range with a start of 1 frequently, you might want to define your own function:

>>> def range1(start, end):
...     return range(start, end+1)
...
>>> range1(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Range function with step higher than stop

The syntax for range is range(start, stop, step)

The range of numbers to be printed starts from 22, to 23 (end point not included), in steps of 24.

The first number is 22, which gets printed.

The next number will be 22 + 24 = 46, which is greater than 23, so it doesn’t get printed and the loop terminates.

Why isn't for loop resetting the range() function?

The instance of range produced by range(x) uses the value of x at the time range is called. It does not repeatedly check the value of x each time you need a new value from the range. Your code is effectively the same as

x = 6

for y in [0, 1, 2, 3, 4, 5]:
   print(y)
   x -= 2

Nothing you do to x has any effect on the range object being iterated.

What is the meaning of range( i + 1 )?

I tried to explain this to you with values

i = 0 ---> j = range(1) = 0 : a[0] = x

--------------------------------
i = 1 ----> j =range(2) = (0,1) : a[1] = y
                                : a[1] = y
 -----------------------------------------   
i = 2 ----> j = range(3) = (0,1,2) : a[2] = z
                                   : a[2] = z
                                   : a[2] = z   

for loops - why does range(len()) cause TypeError: int not subscriptable in this case?

this is because i is an integer in this: list.append(i['FastestLap']['Time']['time'])

try this:

results = json_data['MRData']['RaceTable']['Races'][0]['Results']
for i in range(len(results)):
        list.append(results[i]['FastestLap']['Time']['time'])

It will get the ith item from the list.

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