Howw to prevent the duplication of any value in a column within a CSV file (python)

Tue Apr 26 15:51:58 EDT 2016

On Tue, Apr 26, 2016 at 1:05 PM, Joaquin Alzola
<Joaquin.Alzola at lebara.com> wrote:
> Just an example. Didn't use the csv but just hope that it helps.
>> name=[]
> name_exist="Dop"
>> with open("dop.csv") as f:
> for line in f:
> line_split=line.split(',')
> name.append(line_strip[0])
> if name_exist in name:
> print "found name " + name_exist + " Can not append"
> else:
> file = open("dop.csv",'a')
> print "No name found"
> file.write(name_exist)
> file.close()

Except that as noted elsewhere in the thread a set would be a better
choice than a list, since checking membership is much faster on a set.