On Fri, Dec 6, 2013 at 2:37 PM, Igor Korot <ikoro...@gmail.com> wrote:
> Hi, ALL,
> I have following code:
>
> def MyFunc(self, originalData):
> data = {}
> dateStrs = []
> for i in xrange(0, len(originalData)):
> dateStr, freq, source = originalData[i]
> data[str(dateStr)] = {source: freq}
>
# above line confuses me!
> dateStrs.append(dateStr)
> for i in xrange(0, len(dateStrs) - 1):
> currDateStr = str(dateStrs[i])
> nextDateStrs = str(dateStrs[i + 1])
>
>
Python lets you iterate over a list directly, so :
for d in originalData:
dateStr, freq, source = d
data[source] = freq
Your code looks like you come from a c background. Python idioms are
different
I'm not sure what you are trying to do in the second for loop, but I think
you are trying to iterate thru a dictionary in a certain order, and you
can't depend on the order
>
> It seems very strange that I need the dateStrs list just for the
> purpose of looping thru the dictionary keys.
> Can I get rid of the "dateStrs" variable?
>
> Thank you.
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>
--
Joel Goldstick
http://joelgoldstick.com
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