Select lines stack python

i writen this code:

import os
import re
import string
##
Path = 'C:/RESULT/BATCH/'
##
Nfile = 'Skin_Refined_v05'
f=open(Path + Nfile + '.inp')
n=open(Path + 'newfile.inp', 'w')
for lines, text in enumerate(f):
   found = text.find('*SURFACE')
   while found > -1:
    print found, lines, text
    found = text.find('*SURFACE', found + 1)
    n.write(text)
##
f.close()
n.close()

This is what *.inp looks like (usually about 30Mb)

*SURFACE, NAME = BOTTOM, TYPE = ELEMENT
  40012646, S2   
  40012647, S2   
  40012648, S2   
  40012649, S2   
  40012650, S2   
  40012651, S2   
*SURFACE, NAME = ALL_INT_TIE_1, TYPE = ELEMENT
  40243687, S3   
  40243703, S3   
  40243719, S3   
  40243735, S3   
  40243751, S3   
  40243767, S3   
**
*TIE, NAME = INTERNAL_TIE, POSITION TOLERANCE = 1.0     , ADJUST=NO
SLAVE,MASTER
*TIE, NAME = SKN_REF_1
ALL_INT_FRONT, ALL_EXT_FRONT
*TIE, NAME = SKIN_LAT
ALL_INT_LAT, ALL_EXT_LAT
*TIE, NAME = SKIN_TIE_1
ALL_INT_TIE_1, ALL_INT_TIE_2
**
*SURFACE , NAME = TOP, COMBINE = UNION
TOP_1
TOP_2
**HM_UNSUPPORTED_CARDS
*END PART
*****

what he does it is clear. what I would like to achive is to get all the line between the *SURFACE that begin with a number, which then I will have to arrange differently, but I will worry about that later.

I rewrote the code cos i could not get it to work as suggested, now it is creating the blocks as I need them, but how do i work on each block?

I need to separate all the elements (number followed by S1, S2 and so on) and create groups for each block sorted by S1, S2 and so on the f开发者_如何学编程inal result should look like

*ELSET, ELSET=TOP_S1

40221320, 40221306, 40221305, 40221304, 40221290, 40221289, 40221288, 40221274,

40221273, 40221272, 40221258, 40221257, 40221256, 40221242, 40221241, 40221240,

*SURFACE, NAME = TOP, TYPE = ELEMENT

TOP_S1,S1

import os 
import re
import string

## 
Path = 'C:/RESULT/BATCH/' 
## 
Nfile = 'Skin_Refined_v05' 
f=open(Path + Nfile + '.inp') 
n=open(Path + 'newfile.inp', 'w') 
in_surface_block = False;
for line_num, text in enumerate(f): 
    found = text.find('*SURFACE') 
    if found > -1:
        in_surface_block=True;
        print found, line_num, text         
        surface_lines = []
        continue
    if in_surface_block:
        m = re.match('\s*\d+\,\s*\w\d+',text)
        if m:
            mtext = m.group(0)
##            p=surface_lines.append(text)
            print mtext
##            ntext = surface_lines.append(m.group(0))
##            n.write(ntext)

## 
f.close() 
n.close()

I hope it is clear

---

I think this will do what you want:

import os 
import re 

## 
Path = 'C:/RESULT/BATCH/' 
## 
Nfile = 'Skin_Refined_v05' 
f=open(Path + Nfile + '.inp') 
n=open(Path + 'newfile.inp', 'w') 
in_surface_block = False;
for line_num, text in enumerate(f): 
    found = text.find('*SURFACE') 
    if found > -1:
        in_surface_block=True;
        print found, line_num, text         
        surface_lines = []
        continue

    if in_surface_block:
        if re.match('\s*\d+', text):
            surface_lines.append(text)
        else:
            in_surface_block = False
            // do surface lines work here:
            // surface_lines is a list with all the lines in a surface block 
            // that start with a number
            ...
## 
f.close() 
n.close() 

Edit: Fixed logic error