16 lines
267 B
Python
16 lines
267 B
Python
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#!/usr/bin/python
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import csv
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import sys
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old = {}
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new = {}
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for row in csv.reader(open(sys.argv[1])):
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old[row[0]] = row
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writer = csv.writer(open(sys.argv[3], 'w'))
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for row in csv.reader(open(sys.argv[2])):
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if row[0] not in old:
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writer.writerow(row)
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