[Tutor] iterating over sorted dictionary keys (this right?)

[Karl Pflästerer]

On 28 Mar 2004, kevin parks <- kp8 at mac.com wrote:

> I need to iterate over a dictionary, but since my key is a time value,
> order matters. So i am trying to iterate over a sorted copy of my
> keys. I am guessing that i can no longer use the items method:

Right.

> for key, value in page02.items():

> as i have now sorted my keys (is that right, or am i misunderstanding
> how items() works?)

No you are right.

> In any case i am getting (i think) the right thing by changing :

[...]
> # to

>      mykeys = page02.keys()  # first make a copy of the keys
>      print '-+' * 26
>      print mykeys            # print it and take a look
>      print '-+' * 26
>      mykeys.sort()           # now sort that copy in place
>      print mykeys
>      line_num = 1            # let's count our lines
>      print '-+' * 26
>      # iterate over the sorted keys
>      for key in mykeys:
>          print line_num,"\tKey = %s" %str(key), "\tValue = %s"
>          %str(page02[key])
>          line_num = line_num + 1

That's absolutely right. (the data structure looks now much cleaner).



   Karl
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