Hi
Its been 20 years since I programmed, so I'm stepping back in via
Python. However I'm beating my brains on tuples/lists (what I used to
know as arrays). I've fooled around with small code snippets and tried
a few things, but I can't figure out how to grab elements of
tuples ...
For example, I'm reading in a small csv file like this:
import csv
csvfile = open("example.csv")
#sniff the dialect
dialect = csv.Sniffer().sniff(csvfile.read(1024))
csvfile.seek(0)
# get file in using reader method
mylist=[]
reader = csv.reader(csvfile, dialect)
# grab the lines into a reader and pass to mylist
for row in reader:
mylist.append(row)
# now print something out to prove this worked
print mylist[:3]
and the output I get is:
['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close']
['2010-03-05', '224.20', '230.70', '223.80', '228.30', '5051500',
'228.30']
['2010-03-04', '223.00', '228.50', '220.50', '224.50', '4040500',
'224.50']
So far so good but not useful. My "mylist" has all the data in there,
but I can only figure out how to get each line out!?!
-> I want to get access to the individual items in each line. In my
bad old days I'd have used an array and grabbed "mylist
[row,item]" ...job done. Try as I like and after *lots* of reading
around, I can't figure out whether:
a) I'm missing something...really...simple
b) "You can't do that" (and I should just use numpy and arrays?)
c) errrr....
Like I said, basic/newbie question from a programmer who spent 20
years away from it.
Cheers
Gareth
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