[Tutor] How to select particular lines from a text

[kumar s]

Dear group, 
 This is continuation to my previous email with
sugject line "Python regular expression".  My text
file although, looks like .ini file, but it is not. It
is a chip definition file from Gene chip.  it is a
huge file with over 340,000 lines.

I have particular set of question in general not
related to that file:

Exmple text:

Name:
City:
xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx
....................
xxxxxxxxxxxxxxxxxxxx


Name:
City:
xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx

Characterstics of this text:
1. This text is divided into blocks and every block
start with 'Name'.  The number of lines after this
identifier is random. 

In this particular case how a particular logic I can
think of to extract some of these blocks is:
1.write a reg.exp to identify the Name identifier one
need.
2. based on the this, ask the program to select all
lines after that until it hits either a new line OR
another name identifier:

My question:

How can I tell my program these 2 conditions:

1. mark the identifier i need and select all the lines
after that identifier until it hits a new line or
another name identifier. 


please englihten me with your suggestions. 

thank you. 

kumar


		
__________________________________ 
Do you Yahoo!? 
Read only the mail you want - Yahoo! Mail SpamGuard. 
http://promotions.yahoo.com/new_mail