Read output of file and search for a string, python

[Yukawa]

Hey everyone,

I'm very new in Python. I have to read output of the file, search for the string and read the information in that line.

H 1 6563A 40.092 3.1917 +Col 4438A 37.004 0.0026

Line look like that:

The search string is
H 1 6563A the information I need is in bold.

Please help

[MG&TL]

You should probably start a new thread...but anyway:

for line in open("file"):
 if "H 1 6563A" in line:
  split_string = line.split()
  result_string = split_string[3] + " " + split_string[4] 
  print result_string

Correct me if I'm wrong.

[nothingspecial]

You should probably start a new thread...

You are right.

But since Yukawa didn't, I have

[Yukawa]

You should probably start a new thread...but anyway:

for line in open("file"):
 if "H 1 6563A" in line:
  split_string = line.split()
  result_string = split_string[3] + " " + split_string[4] 
  print result_string

Correct me if I'm wrong.

Thank you for such a quick answer. This works jut fine when string is at the beginning of the line, but sometimes is in the middle? What to do in that case?

[sanderj]

So, do you mean the two 'words' after "6563A" anywhere in the string. If so:

import string

line = "blabla blabla bla H 1 6563A 40.092 3.1917 +Col 4438A 37.004 0.0026"
searchstring = "6563A"

split_string = line[string.find(line,searchstring):].split()

result_string = split_string[1] + " " + split_string[2]
print result_string

with this result:

sander@R540:~$ python stringding.py 
40.092 3.1917
sander@R540:~$

[Yukawa]

So, do you mean the two 'words' after "6563A" anywhere in the string. If so:

import string

line = "blabla blabla bla H 1 6563A 40.092 3.1917 +Col 4438A 37.004 0.0026"
searchstring = "6563A"

split_string = line[string.find(line,searchstring):].split()

result_string = split_string[1] + " " + split_string[2]
print result_string

with this result:

sander@R540:~$ python stringding.py 
40.092 3.1917
sander@R540:~$

Thanks mate it is working now

[Yukawa]

OK another question. If I wonna perform that in multiple files, with same extension. How I can do that?

[MG&TL]

Using glob.glob would be one solution. http://docs.python.org/library/glob.html#glob.glob

for files in glob.glob('/path/to/files/*.txt'):
 for lines in open(files):
 #Do stuff with lines here.

EDIT: although yeah, a quick google got that.

[sanderj]

OK another question. If I wonna perform that in multiple files, with same extension. How I can do that?

... I would advice you to read something on Python. It now feels like we're doing your homework.

[Yukawa]

So, do you mean the two 'words' after "6563A" anywhere in the string. If so:

import string

line = "blabla blabla bla H 1 6563A 40.092 3.1917 +Col 4438A 37.004 0.0026"
searchstring = "6563A"

split_string = line[string.find(line,searchstring):].split()

result_string = split_string[1] + " " + split_string[2]
print result_string

with this result:

sander@R540:~$ python stringding.py 
40.092 3.1917
sander@R540:~$

Using glob.glob would be one solution. http://docs.python.org/library/glob.html#glob.glob

for files in glob.glob('/path/to/files/*.txt'):
 for lines in open(files):
 #Do stuff with lines here.

EDIT: although yeah, a quick google got that.

I was doing that, found it on the google, but I was having some other mistake in the code, so when i tried this in the first place it didn't work. Don't worry this is not homework, no marks no grades.

Thanks once more.