> -Original Message-
> From: amr...@iisermohali.ac.in [mailto:amr...@iisermohali.ac.in]
> Sent: Wednesday, July 29, 2009 12:13 AM
> To: Paul McGuire
> Cc: tutor@python.org
> Subject: Re: [Tutor] how to get blank value
>
> Thanks for help Sir but with these comm
Thanks for help Sir but with these commands it is showing error:-
ph08...@sys53:~> python trip.py
Traceback (most recent call last):
File "trip.py", line 6, in
from pyparsing import *
ImportError: No module named pyparsing
> Ok, I've seen various passes at this problem using regex, split(
Ok, I've seen various passes at this problem using regex, split('='), etc.,
but the solutions seem fairly fragile, and the OP doesn't seem happy with
any of them. Here is how this problem looks if you were going to try
breaking it up with pyparsing:
- Each line starts with an integer, and the stri
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.
Thanks for help.
Amrita
amr...@iisermohali.ac.in wrote:
Sorry to say, but till now I have not got the solution of my problem, I
You may like to have a look @ pyparsing module.
URL: http://pyparsing.wikispaces.com/
HTH.
regards,
shantanoo
On 29-Jul-09, at 1:03 AM, amr...@iisermohali.ac.in wrote:
with these data it is giving output but when I tried
if __name__ == '__main__':
data = open('chem.txt').readlines()
for line
with these data it is giving output but when I tried
if __name__ == '__main__':
data = open('chem.txt').readlines()
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
wrote
Sorry to say, but till now I have not got the solution of my problem, I
tried with this command:-
import re
if __name__ == '__main__':
data = open('chem.txt').readlines()
for line in data:
RE = re.compile('C = (.)',re.M)
The regex still does not match the end of line.
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
It is not giving any value, without any error
ph08...@sys53:~> python trial.py
ph08...@sys53:~>
it is coming out from shell.
Thanks for help.
Amrita
> amr...@iisermohali.ac.in wrote:
>> Sorry to say, but till now I have not got the solution of my problem, I
>> tried with this command:-
>>
>> imp
amr...@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 d
Sorry to say, but till now I have not got the solution of my problem, I
tried with this command:-
import re
if __name__ == '__main__':
data = open('chem.txt').readlines()
for line in data:
RE = re.compile('C = (.)',re.M)
matches = RE.findall(line)
for m in mat
wrote
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.
Don;
Mark Summerfield recently wrote a book called Programming in Python 3
(http://www.qtrac.eu/py3book.html) The chapter on regexes happens to be freely
downloadable as a sample chapter:
http://ptgmedia.pearsoncmg.com/images/9780137129294/samplepages/0137129297_Sample.pdf
I found that chapter (in f
You will probably continue to get unsatisfactory responses if you continue
to ask unsatisfactory questions.Python won't automatically parse this
document in exactly the way you want it to. You're on the right track but
you need to do as Alan said and actually read the regex articles to
understand
> What is the python command for searching blank value of a parameter?
> Please use Reply All to send it to the list as well.
>
>
>> I am trying it in this way also:---
>>
>> import re
>> expr = re.compile("C")
>
> This will find all lines with the letter C in them.
> Which from your data is all
Please use Reply All to send it to the list as well.
> I am trying it in this way also:---
>
> import re
> expr = re.compile("C")
This will find all lines with the letter C in them.
Which from your data is all of them. Look at the regex documentation
to see how to represent the end of a lin
wrote
48 ALA H = 8.33 N = 120.77 CA = 55.18 HA = 4.12 C = 181.50
104 ALA H = 7.70 N = CA = HA = 4.21 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
expr
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