[Courses] [python] Lesson 2: Loops, if, and beer

[Leslie]

Two questions from this lesson:
> 
> At the Python >>> prompt, try typing:
> range(10, 2)
> [2, 4, 6, 8]
I didn't get that. I got:
>>> range(10, 2)
[]
>>>
What gives?? I did not get [2, 4, 6, 8]
However, if I typed
range (10, 2, -2), I got [10, 8, 6, 4]

> 
> for i in range(1, 6) :
>     if i == 3 :
>         print "i is three!"
>     elif i == 4 :
>         print "now it's four!"
>     else :
>         print "Hello, world! i =", i

This question is about interactive (console) Python.
I entered the above but had a typo in the first line so I got an error
message.  Is there a way to correct a line retroactively when you are in
interactive Python (>>>) mode -- so you don't have to just enter the
whole thing all over again?

Thanks,

Leslie
>