Untitled

l = [1, 2, 3]           # <---- We have created a list with 1, 2, 3
val = 10                # We created a Dummy variable val, that has 10 in it 
idx = 0                 # What is the main purpose of idx ??        <-- Question 1 
while idx < len(l):     # so while idx which is 0 right now, is less than the len of the list, do it means 1, 2, 3  making it 7 (counting the , and spaces)  or  1+2+3 = 6  or how is it measuring the length ?  <--- Question 2
    if l[idx] == val:   # I am little unsure how to speak this code part in English.... so if list l, idx element in the list is equals to val which is 10    <--- Question 3
        break           # than quit, break the code, break the loop.
    idx += 1            # if above is not true, than idx right now is 0, than add 1 to it. 
else:                   # And if nothing above was true, but i am confused, if While idx which is 0 is less than lenght of list l ??  If you can check my Question 2 above    <---- Question 4
    l.append(val)       # Just add the val, which is 10 in to the list. 
    
print(l)                # print the list l now.