From: Wayne Werner Sent: Thursday, November 17, 2011 8:30 PM To: Mic Cc: tutor@python.org Subject: Re: [Tutor] Clock in tkinter?
Say that I have a class and I want to make 100 objects.
Then it could look like this:
<snip>
class Chairs(object):
<snip code>
#Create the objects
chair1=Chairs("10","20")
chair2=Chairs("10","20")
chair3=Chairs("10","20")
How do I shorten this? I have thought of using a for sling. I have looked in
my programming
book and on the internet, but I don’t know how to make this shorter. The
arguements (“10”, “20”)
should be the same for every object, which should make it easier than if they
were different each time?
If you ever write a line of code more than once, it's a good sign that you have
what's called a code smell. This example is very smelly code ;)
What you should do instead is have a collection of chairs:
chairs = []
for _ in range(100): # the underscore `_` indicates that you don't care about
the value
chairs.append(Chairs("10","20))
----------------------------------------------------------------------------------
Yes, I got that right now. But now that you talked about shortening code, I
have a general question.
What if I don’t write the same line of code more than once, but I write
similiar lines more than once. Is that okay?
For example:
value="green”
value_1=”green”
click=-1
click1=-1
click2=-1
I know that I can make this shorter, with a for sling for example, but the
problem is that
I need to use these variables later in my program, and I don’t know how do to
then, to be able
to use them later on, in a function for example. Do you have any general tips
on how to make
your code shorter?
I also hope I have learnt to post better now.
Thanks!
Mic
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