[Tutor] how to get blank value

[amrita at iisermohali.ac.in]

It is not giving any value, without any error

ph08001 at sys53:~> python trial.py
ph08001 at sys53:~>
it is coming out from shell.

Thanks for help.
Amrita

> amrita at iisermohali.ac.in wrote:
>> Sorry to say, but till now I have not got the solution of my problem, I
>> tried with this command:-
>>
>> import re
>>
>>
> # assuming H = , N = , CA = , HA =  and C = always present in that order
> if __name__ == '__main__':
>   data = open('chem.txt').readlines()
>   for line in data:
>     line = line.split('=')
>     if not line[5]: # C value missing
>      if len(line[2])==1 and len(line[3])==1: # N and CA values missing
>         print "all missing", line
>       else:
>         print "C missing", line
>
>>
>>
>>> 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,
>>>
>>> With these commands:-
>>>
>>> import re
>>> f = open('chem.txt')
>>> for line in f:
>>>      if re.search('C = ',line):
>>>         print line
>>>
>>> I am getting those lines for which C value is there but how to get
>>> those
>>> one for which it doesn't have any value, i did google search but still
>>> i
>>> am not getting.
>>>
>>> Amrita Kumari
>>> Research Fellow
>>> IISER Mohali
>>> Chandigarh
>>> INDIA
>>>
>>>
>>>
>
>
> --
> Bob Gailer
> Chapel Hill NC
> 919-636-4239
>


Amrita Kumari
Research Fellow
IISER Mohali
Chandigarh
INDIA