any such thing as list interleaving?

[Bob Gailer]

At 02:00 PM 7/12/2003 -0700, Tom Plunket wrote:

>I find myself often doing the following sort of thing (sorry for
>lack of whitespace, I don't want the line to break):
>
>for entry, index in map(lambda e,i:(e,i),aList,range(len(aList)):
>    # ...
>
>This definitely seems like a roundabout way to loop through
>parallel lists together.  Is this map routine truly the easiest/
>best/most straight-forward way to do a for loop through parallel
>lists, if I feel that the Python anti-idom of:
>
>for index in range(len(myList)):
>    entry = aList(index)
>    anotherEntry = anotherList(index)
>    # ...

mergedList = zip(aList, anotherList)

>This also brings up a similar problem for me when iterating over dictionaries:
>
>for key in myDict:
>    value = myDict[key]
>    # ...
>
>This seems a pretty sloppy way to go about it, imo.  There must be 
>something more in the Python spirit!  :)

for key, value in myDict.items():

Bob Gailer
bgailer at alum.rpi.edu
303 442 2625
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