[Courses] [python] Lesson 2: Loops, if, and beer
buffarama at gmail.com
Sat Jun 25 04:05:50 UTC 2011
On Fri, Jun 24, 2011 at 3:31 PM, Akkana Peck <akkana at shallowsky.com> wrote:
> ===================== Homework =======================
> 1. Your first programming assignment!
> Write a program for the old "bottles of beer" song. It should print
> something like:
> 99 bottles of beer on the wall
> 98 bottles of beer on the wall
> 97 bottles of beer on the wall
> ... all the way down to 1.
> Extra credit: make it print the number twice, e.g.
> 99 bottles of beer on the wall, 99 bottles of beer
for i in range(99, 0, -1) :
if i == 1 :
print i,"bottle of beer on the wall,",i,"bottle of beer,"
print i,"bottles of beer on the wall,",i,"bottles of beer,"
> 2. What does range(0, 10, -1) give? (Try it.)
> Any idea why?
the first two numbers specify from 0 to 10, forwards, and the -1
specifies to count backwards, you can't do both at the same time.
> 3. How was the length of this lesson? Too much, too little or just right?
I thought it was a little short, but as others have said, I've done
programming before, so it may be someone else's perfect pace.
> Problem 4 is optional -- it's a little harder, but give it a try,
> and if you don't get it, take a look at the answers other students
> post. But try it on your own first, if you can.
> 4. Write a loop using range() that prints out the first five numbers
> as words:
for i in range(1, 6) :
if i == 1 :
elif i == 2 :
elif i == 3 :
elif i == 4 :
elif i == 5 :
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