def transfer(argv=sys.argv):
try:
opts, args = getopt.getopt(argv[1:], "n")
except getopt.GetoptError:
usage()
return 1
dry_run = False
for o, a in opts:
if o == "-n":
dry_run = True
if len(args) == 3:
default_ttl = int(args[2])
else:
default_ttl = 86400
axfr(args[0], args[1], default_ttl, dry_run=dry_run)
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