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#!/usr/bin/env python
import argparse
import csv
import math
description = "Subtracts two CSV from each other"
epilog = "2018 Sander Vrijders <sander.vrijders@ugent.be>"
parser = argparse.ArgumentParser(description=description,
epilog=epilog)
parser.add_argument('-o', '--output', type=str, required=True,
help='Output CSV filename.')
parser.add_argument('-f', '--first', type=str, required=True,
help='First input CSV filename.')
parser.add_argument('-s', '--second', type=str, required=True,
help='Second input CSV filename.')
args = parser.parse_args()
csvfile = open(args.second, 'r')
reader = csv.reader(csvfile, delimiter=';', quotechar='|')
# Set second measurement
bandwidth = {}
for row in reader:
if (row[1], row[0]) in bandwidth:
bandwidth[row[1], row[0]] += int(row[2])
else:
bandwidth[row[0], row[1]] = int(row[2])
# Subtract first measurement
csvfile2 = open(args.first, 'r')
reader2 = csv.reader(csvfile2, delimiter=';', quotechar='|')
for row in reader2:
if (row[1], row[0]) in bandwidth:
bandwidth[row[1], row[0]] -= int(row[2])
else:
bandwidth[row[0], row[1]] -= int(row[2])
csvfile3 = open(args.output, 'w')
writer = csv.writer(csvfile3, delimiter=';', quotechar='|')
for key, value in bandwidth.items():
writer.writerow([key[0], key[1], value])
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