Interesting (?) problem

Nobody nobody at nowhere.com
Mon Jan 11 20:10:30 CET 2010


On Mon, 11 Jan 2010 18:57:24 +0100, mk wrote:

>> I have two lists of IP addresses:
>> 
>> hostips = [ 'a', 'b', 'c', 'd', 'e' ]
>> 
>> thread_results = [ 'd', 'b', 'c' ]
>> 
>> I need to sort thread_results in the same order as hostips.
> 
> P.S. One clarification: those lists are actually more complicated 
> (thread_result is a list of tuples (ip, thread)), which is why I need 
> thread_results sorted in order of hostips (instead of just constructing 
> [ h for h in hostips if h in thread_results ] and be done with it).

1.
	thread_results_dict = dict([(v[0], v) for v in thread_results])
	[thread_results_dict[h] for h in hostips if h in thread_results_dict]

2.
	hostips_dict = dict([(ip, idx) for idx, ip in enumerate(hostips)])
	sorted(thread_results, key = lambda r: hostips_dict[r[0]])




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