On 2017-01-08 22:58, Deborah Swanson wrote:
> 1) I have a section that loops through the sorted data, compares two
> adjacent rows at a time, and marks one of them for deletion if the
> rows are identical.
>
> I'm using
>
> for i in range(len(records)-1):
> r1 = records[i]
> r2 = records[i+1]
> if r1.xx = r2.xx:
> .
> .
> and my question is whether there's a way to work with two adjacent
> rows without using subscripts?
I usually wrap the iterable in something like
def pairwise(it):
prev = next(it)
for thing in it:
yield prev, thing
prev = thing
for prev, cur in pairwise(records):
compare(prev, cur)
which I find makes it more readable.
-tkc
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