groveling over a file for Q:: and A:: stmts
steve+comp.lang.python at pearwood.info
Tue Jul 24 10:21:08 CEST 2012
On Tue, 24 Jul 2012 00:50:22 -0700, paul618 wrote:
> #!/usr/bin/env python
> # grep_for_QA.py I am only looking to isolate uniq Q:: and A:: stmts
> from my daily files #
> # note: This algorithm will fail if there are any blank lines within
> the Q and A area of interest (a paragraph)
> # D. Beazley is my fav documentation
If you are going to ask a question, please ask a question. Don't just
dump a whole pile of code in our laps and expect us to work out what your
It may help if you read this page:
Some further comments below:
> import re, glob
> import pprint as pp
> sampledata = '''
> A:: And Straight Street is playin on the Radio Free Tibet. What are the
> chances, DTMB? Q:: About 1 in 518400, Professor.
> A:: Correct! Err, I thought it was 1:410400, but <i>close enough for
> pattern0 = re.compile("Q::")
There is no point in using a regular expression for something as trivial
as that. That is like swinging a 20 kg sledge-hammer to crack a peanut.
Just use a string method:
if my_string.startswith("Q::"): ...
> # Later, I also need to treat Unicode -- and I am clueless.
If you have a question about Unicode, you should ask it.
If you have not already read this page, you should read it now:
> except Exception as e:
> print("--- " + e + " ---")
Please don't throw away useful debugging information.
You should learn to read exception tracebacks, not hide them. They
contain a lot of very useful information to help you debug your code.
> except UnicodeDecodeError:
> #encoded_line = encoded_line.urlsafe_b64encode(re.replace("asdf",
> encoded_line)) #line = re.sub(".+", "--- asdf ---", line) pass
This will never be caught because any UnicodeDecodeError will already be
caught by the "except Exception" line above.
> print (L)
> # and what"s wrong with some of this, here! #myHash = set(L) #
> #pp.pprint(myHash) # july 23, 131001 hike!
I don't know what's wrong with it. What do you expect it to do, and what
does it actually do instead?
More information about the Python-list