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copied!<pre><code>import re s = '''Aug 23, 2011 10:31:35 AM This is the start of the text. This is more Text. This is another line This is another line This is more. Aug 23, 2011 10:41:00 AM This is the next in the series. This is another line This is more Text. This is another line This is another line This is more. Aug 24, 2011 10:41:00 AM This is the next in the series. This is another line This is more Text. This is another line This is another line This is more. ''' months = '(?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)' ch = '%s \d\d?, \d{4} \d\d:\d\d:\d\d (?:AM|am|PM|pm)' % months regx = re.compile('%s.*?(?=%s|\Z)' % (ch,ch), re.DOTALL) for x in regx.findall(s): print repr(x) print </code></pre> <p>result</p> <pre><code>'Aug 23, 2011 10:31:35 AM This is the start of the text.\n This is more Text.\nThis is another line\nThis is another line\n This is more.\n' 'Aug 23, 2011 10:41:00 AM This is the next in the series.\nThis is another line\n This is more Text.\nThis is another line\n This is another line\n This is more.\n' 'Aug 24, 2011 10:41:00 AM This is the next in the series.\nThis is another line\n This is more Text.\nThis is another line\n This is another line\n This is more. ' </code></pre> <p>Yes, you'll have to learn the regex tool (module <code>re</code>)</p> <p>update: a minimum of explanations:</p> <p>parens <code>(...)</code> define a group<br> without <code>?:</code>, it is a capturing group<br> <code>(?:......)</code> is a non capturing group</p> <p><code>(?=....)</code> means **after this point, there must be a portion of string matching what is symbolised after <code>?=</code> , but this portion isn't captured: that's the way to obtain a stop of the regex motor just before this portion, without capturing it; that allows too, and it is the more important, the regex motor to match again from the beginning of this stopping portion, otehrwise the latter would be consumed too</p> <p><code>re.DOTALL</code> is to make the symbol . (the dot) to match ALL the characters, comprised '\n' , which is not the case without this flag</p>

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