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import time
import stem.descriptor
def measure_average_advertised_bandwidth(path):
start_time = time.time()
total_bw, count = 0, 0
for desc in stem.descriptor.parse_file(path):
total_bw += min(desc.average_bandwidth, desc.burst_bandwidth, desc.observed_bandwidth)
count += 1
runtime = time.time() - start_time
print("Finished measure_average_advertised_bandwidth('%s')" % path)
print(' Total time: %i seconds' % runtime)
print(' Processed server descriptors: %i' % count)
print(' Average advertised bandwidth: %i' % (total_bw / count))
print(' Time per server descriptor: %0.5f seconds' % (runtime / count))
print('')
if __name__ == '__main__':
measure_average_advertised_bandwidth('server-descriptors-2015-11.tar')
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