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import sys
if len(sys.argv) < 3:
sys.stderr.write('Usage: repeat [string] [length]\n')
sys.exit(1)
s = sys.argv[1]
length = int(sys.argv[2])
if length > 0:
if length > 1024:
while len(s) < 1024:
s = s + s;
while length > len(s):
sys.stdout.write(s)
length -= len(s)
sys.stdout.write(s[:length])
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