On 17/11/10 13:59, Hanlie Pretorius wrote:
Hi,
I'm reading a CSV file and I want to test the contents of its second
column before I write it to an output file:
import csv
time_list=['00:00', '03:00', '06:00','09:00','12:00','15:00','18:00','21:00']
readfile='C8R004_flow.csv'
in_text=open(readfile,'rb')
cr=csv.reader(in_text)
cr
<_csv.reader object at 0x7f4dfc3b2360>
for row in cr:
... print row
['2005/01/31', '21:00:00', '26.508']
['2005/01/31', '21:12:00', '26.508']
['2005/01/31', '21:24:00', '26.508']
['2005/01/31', '21:36:00', '26.508']
['2005/01/31', '21:48:00', '26.508']
['2005/01/31', '22:00:00', '26.508']
['2005/01/31', '22:12:00', '26.508']
['2005/01/31', '22:24:00', '26.508']
['2005/01/31', '22:36:00', '26.508']
['2005/01/31', '22:48:00', '26.508']
['2005/01/31', '23:00:00', '26.508']
['2005/01/31', '23:12:00', '26.508']
['2005/01/31', '23:24:00', '26.508']
['2005/01/31', '23:36:00', '26.508']
['2005/01/31', '23:48:00', '26.508']
I would like to test the values in the second column to see if they're
in the list I named time_list and, if so, write the whole row to an
output file.
The problem is that I don't know how to access the second column of
values. I tried the direct route:
for row in cr:
... print cr[1]
...
You need to print the 2nd item of row not of the entire file ie "print
row[1]" not "print cr[1]".
HTH.
Adam.
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