amr...@iisermohali.ac.in wrote:
It is not giving any value, without any error

ph08...@sys53:~> python trial.py
ph08...@sys53:~>
it is coming out from shell.
Try this. I embedded the test data to simplify testing:

data = """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 =""".split('\n')
for line in data:
   line2 = line.split('=')
   if not line2[5]: # C value missing
if len(line2[2]) <= 5 and len(line2[3]) <= 5: # N and CA values missing
       print "all missing", line
     else:
       print "C missing", line

--
Bob Gailer
Chapel Hill NC
919-636-4239
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