import re
p = re.compile(r'^\s+([\w-]+)\s+.+$', re.MULTILINE)
test_str = "config t\nEnter configuration commands, one per line.  End with CNTL/Z.\nn7k(config)# port-profile demo_ethernet\nn7k(config-port-prof)# ?\n  bandwidth       Set bandwidth informational parameter\n  beacon          Disable/enable the beacon for an interface\n  cdp             Configure CDP interface parameters\n  channel-group   Configure port channel parameters\n  delay           Specify interface throughput delay\n  description     Enter port-profile description of maximum 80 characters"
 
print(re.findall(p, test_str))

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