Filter CSV File with Pandas/Python -


i have csv file, wanted filter keep rows have values in row "d" bigger 0.

file: 

  index  value    d 0    975  25.35   5 1    976  26.28   4 2    977  26.24   1 3    978  25.76   0 4    979  26.08   0

i used pandas that, didn't work out: 

df = pd.read_csv("thisfilel.csv") df = df[(df["d"]>0)]

i used other approach well, it's long process file of 600mb.

with open("thisfilel.csv", 'rb') source:     writer = csv.writer(source)     line in source:         if line.d > 0 :               writer.writerow(headers)

sorry, no pandas solution, kind of task basic unix tools cannot beaten. if use windows can same cygwin:

$ awk '{if ($4 > 0) print $0}' t.csv    0    975  25.35   5   1    976  26.28   4   2    977  26.24   1

you can filter data in desired way, save file, , read in using pandas:

$ awk '{if ($4 > 0) print $0}' t.csv >filtered.csv

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