How to grab the lines AFTER a matched line in python

Question

I am an amateur using Python on and off for some time now. Sorry if this is a silly question, but I was wondering if anyone knew an easy way to grab a bunch of lines if the

Answer 1

You could use a variable to mark where which heading you are currently tracking, and if it is set, grab every line until you find another heading:

data = {}
for line in file:
    line = line.strip()
    if not line: continue

    if line.startswith('Heading '):
        if line not in data: data[line] = []
        heading = line
        continue

    data[heading].append(line)

Here's a http://codepad.org snippet that shows how it works: http://codepad.org/KA8zGS9E

Edit: If you don't care about the actual heading values and just want a list at the end, you can use this:

data = []
for line in file:
    line = line.strip()
    if not line: continue

    if line.startswith('Heading '):
        continue

    data.append(line)

Basically, you don't really need to track a variable for the heading, instead you can just filter out all lines that match the Heading pattern.