Insert splitted string into a list in python

Question

consider this piece of code:

csvreader = csv.reader(filter(lambda row: row[0] != '#', fcsv), delimiter= '\t')
csvrs =[[row[2], row[7]] for row in csvreader]

the element row[7] is a string separated by ;, what i want to do is not put the entire row[7] inside csvrs but only a splitted part seaprated by ; Say for example:

row[7] = '123;457;789;1011'

i want only the second position inside csvrs (in this case 457) and i want this every time filtering out every other piece. I'M trying with split with no result maintaining the list comprehension.

How are you using .split(), and what does it do wrong?

zondo
– zondo

2016-05-06 14:20:43 +00:00
Commented May 6, 2016 at 14:20 — zondo
– zondo, Commented May 6, 2016 at 14:20

Tim · Accepted Answer · 2016-05-06 14:23:19Z

1

Just do the split inside the comprehension and get [1] for the second item

csvrs =[[row[2], row[7].split(';')[1]] for row in csvreader]

answered May 6, 2016 at 14:23

Tim

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VelikiiNehochuha · Accepted Answer · 2016-05-06 14:25:32Z

1

def get_second_col(row, delimiter=';'):
    try:
        return row.split(delimeter)[1]
    except IndexError:
        return None

csvrs =[[row[2], get_second_col(row[7])] for row in csvreader]

answered May 6, 2016 at 14:25

VelikiiNehochuha

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