[Tutor] Clock in tkinter?
waynejwerner at gmail.com
Thu Nov 17 20:30:52 CET 2011
On Thu, Nov 17, 2011 at 1:17 PM, Mic <o0MB0o at hotmail.se> wrote:
> I have now worked to stop using the global scope and instead put my
> prior global variable into
> the constructor in the class. I believe that I have managed to do that now.
> Do you believe that this is correctly done?
> #Trying putting the_time'' in constructor instead of
> #putting it in the global scope to shorten code.
> self.after(20, self.update_time)
Since you're using the shorter version of the function you no longer need
self.the_time, so you can go ahead and remove that variable.
> I have another question.
It would have been fine (and even preferred) to create a new email here
with a title something like "How do I shorten this code?"
> Say that I have a class and I want to make 100 objects.
> Then it could look like this:
> class Chairs(object):
> <snip code>
> #Create the objects
> 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
You can do that even shorter with a list comprehension, but I'll leave that
exercise up to you :)
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