how to get no value

Mark Lawrence breamoreboy at yahoo.co.uk
Fri Jul 24 15:50:33 CEST 2009


amrita at iisermohali.ac.in wrote:
> Hi,
> 
> I have a file having lines:-
> 
> 48 ALA H = 8.33 N = 120.77 CA = 55.18 HA = 4.12 C = 181.50
> 104 ALA H = 7.70 N = 121.21 CA = 54.32 HA = 4.21 C =
> 85 ALA H = 8.60 N =  CA =  HA = 4.65 C =
> 
> Now i want to make two another file in which i want to put those lines for
> which C is missing and another one for which N,CA and C all are missing,
> 
> I tried in this way:
> import re
> f = open('chem.txt')
> for line in f:
>      if re.search('C = ',''):
>         print line
> 
> but i am not getting the desired output.
> 
> 
> 
> 
> Amrita Kumari
> Research Fellow
> IISER Mohali
> Chandigarh
> INDIA
> 
Try writing correct rather than incorrect code.  Or as has been 
repeatedly stated get somone from your CS department to help.


-- 

Kindest regards.

Mark Lawrence.




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