[Courses] [python] Lesson 2: Loops, if, and beer
larry.cafiero at gmail.com
Tue Jun 28 06:21:09 UTC 2011
Late on this one (sorry):
> ===================== 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
I hope this is right:
for i in range(99, 0, -1):
print i, "bottles of beer on the wall,", i, "bottles of beer,"
print "Take one down, pass it around,", (i-1), "bottles of beer on
[Although I tried to put a space between each verse, but couldn't]
> 2. What does range(0, 10, -1) give? (Try it.)
> Any idea why?
It gives two brackets with nothing between them. I think it's because
if you're starting at 0, then -1 wouldn't produce any numbers.
> 3. How was the length of this lesson? Too much, too little or just right?
The length was fine and I have to apologize for my tardy response. I'm
in the throes of moving.
> 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:
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