[Tutor] please help: conditional statement and printing element

[Kent Johnson]

kumar s wrote:
> Dear group, 
>   For some reason my brain cannot think of any other
> option than what I have in my script. Could any one
> please help me in suggesting.
> 
> What I have : (File name : psl)
> 22	2	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 22	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 24	1	457:411	25	0
> 22	0	457:411	25	0
> 21	0	457:411	25	0
> 25	0	457:411	25	0
> 25	0	457:411	25	0
> 
> 
> What to do:
> I want to print values that are 25 in column 1 and not
> the other values such as 24,22,21 etc.
> 
> 
> My script:
> 
>>>>for i in range(len(psl)):
> 
> 	col = split(psl[i],'\t')
> 	col1 = col[0]

col1 is a text string, not a number, e.g. '25', not 25. The simplest thing is just to compare it to 
'25':
> 	if col1 == 25:

	if col1 == '25':

Kent

> 		print col[0]+'\t'+col[1]+'\t'+col[17]
> 
> 
> 
> 
> Result: I get nothing. Am I doing something very
> wrong. Why isnt if col1 == 25: functional. 
> 
> My idea is to check if col[0] == 25: then print
> columns 1,18 etc. 
> 
> Can you please help me. 
> 
> Thanks
> K
> 
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