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"""Use the ping utility to attempt to reach the host. We send 5 packets
('-c 5') and wait 3 milliseconds ('-W 3') for a response. The function
returns the return code from the ping utility.
ret_code = subprocess.call(['ping', '-c', '5', '-W', '3', hostname],
"""For each hostname in the list, attempt to reach it using ping. Returns a
dict in which the keys are the hostnames, and the values are the return
codes from ping. Assumes that the hostnames are valid.
return_codes = dict()
for hostname in host_list:
return_codes[hostname] = ping_return_code(hostname)
hosts_to_test = [
if __name__ == '__main__':
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