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- def filter_file(fn):
- print("Scanning %s..." % fn)
- locations = find_nhs_numbers(fn)
- if locations is None:
- print("Failed to open.")
- return False
- nhs_numbers = []
- try:
- f = open("DEP2.CSV", 'rb')
- except IOError:
- return
- for location in locations:
- f.seek(location)
- nhs_numbers.append(f.read(10))
- f.close()
- print("found %d valid NHS numbers" % len(locations))
- replace_nhs_numbers(fn, locations)
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