[Tutor] Printing two elements in a list

[Kent Johnson]

kumar,

Looking at the quantity and structure of your data I think the search you are doing is going to be 
pretty slow - you will be doing 4504 * 398169 = 1,793,353,176 string searches.

Where does the seq data come from? Could you consolidate the pairs of lines into a single record? If 
you do that and extract the '399:559' portion, you could build a dict that maps '399:559' to the 
full record. Looking up '399:559' in the dictionary would be much, much faster than searching the 
entire list.

If you have multiple entries for '399:559' you could have the dict map to a list.

Kent

kumar s wrote:
> 
>>>>len(x)
> 
> 4504
> 
>>>>x[1:10]
> 
> ['454:494', '319:607', '319:608', '322:289',
> '322:290', '183:330', '183:329', '364:95', '364:96']
> 
>>>>len(seq)
> 
> 398169
> 
>>>>seq[0:4]
> 
> ['>probe:HG-U95Av2:1000_at:399:559;
> Interrogation_Position=1367; Antisense;',
> 'TCTCCTTTGCTGAGGCCTCCAGCTT',
> '>probe:HG-U95Av2:1000_at:544:185;
> Interrogation_Position=1379; Antisense;',
> 'AGGCCTCCAGCTTCAGGCAGGCCAA']
> 
> 
> 
>>>>for ele1 in x:
> 
> 	for ele2 in seq:
> 		if ele1 in ele2:
> 			print ele2
> 
> 			
> 
>>probe:HG-U95Av2:31358_at:454:493;
> 
> Interrogation_Position=132; Antisense;
> 
>>probe:HG-U95Av2:31358_at:319:607;
> 
> Interrogation_Position=144; Antisense;
> 
> 
> 
> 
> 
> 
> How Do I WANT:
> 
> I want to print get an output like this:
> 
> 
> 
>>probe:HG-U95Av2:1000_at:399:559;
> 
> Interrogation_Position=1367; Antisense;'
> TCTCCTTTGCTGAGGCCTCCAGCTT
> 
> 
>>probe:HG-U95Av2:1000_at:544:185;
> 
> Interrogation_Position=1379; Antisense;
> AGGCCTCCAGCTTCAGGCAGGCCAA
> 
> 
> can any one please suggest what is going wrong in my
> statements and how can I get it. 
> 
> Thank you.
> Kumar
> 
> 
> 		
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