On Sat, Mar 16, 2013 at 8:04 PM, <[email protected]> wrote:
> Dear Tutor
>
> Global constants and variables are bad. But what's better? I've heard some
> suggestions, but haven't seen much actual code showing how to improve
> globals. I
> don't like:
>
> * Passing a lot of individual arguments.
> * Creating a structure with unrelated elements.
> * Passing a structure, as an argument, through a function that uses only one
> (or
> none of the) elements in the structure.
>
> I created an example (below), that could be written with global constants and
> variables. How would you suggest handling something like this? (I don't need
> you
> to stick to my example.)
>
> #!/usr/bin/python
>
> START = '<'
> END = '>'
>
[snip]
> def stuff():
> if c == START or c == END:
> foo_the_bar =
Ugh, you don’t need variables for this. You should do:
if c == '<' or c == '>'
Or, even more Pythonically:
if c in '<>'
Now, for other cases, I suggest OOP and class member values or stuff like that.
--
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