NmaptoCSV parser concatenate the host to get all the port open in one line

transform-csv-concatenante-identical-values.py

# <HOST>,<PORT>,<whatever>
# used as nmaptocsv parser : https://github.com/maaaaz/nmaptocsv/
#
# Takes as input 
# toto,value
# toto, value1
# tata, value
# tata value1
#
# gives at output
#
# toto, value-value1
# toto, value-value1
# 


import csv

with open('input.txt') as csv_file:
    csv_reader = csv.reader(csv_file, delimiter=',')
    first_line = next(csv_reader, None)
    prev_line = first_line[0]
    found_ports = first_line[1]
    current_line = first_line[0]
    for row in csv_reader:
        current_line = row[0]
        if prev_line == current_line:
            current_line = row[0]
            found_ports += "-"+row[1]
        else:
            print( prev_line + ", " + found_ports )
            current_line = row[0]
            prev_line = current_line
            found_ports = row[1]
    print( current_line + ", " + found_ports )