http://bugs.python.org/issue9179
On Jul 5, 9:38 pm, MRAB wrote:
> andrew cooke wrote:
> > On Jul 5, 8:56 pm, MRAB wrote:
> >> andrew cooke wrote:
> >>> What am I missing this time? :o(
> >> Nothing. It's a bug. :-(
>
> > Sweet :o)
>
> > Thanks - do you want me to raise an issue or will you?
>
>
andrew cooke wrote:
On Jul 5, 8:56 pm, MRAB wrote:
andrew cooke wrote:
What am I missing this time? :o(
Nothing. It's a bug. :-(
Sweet :o)
Thanks - do you want me to raise an issue or will you?
You found it. You can have the pleasure.
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On Jul 5, 8:56 pm, MRAB wrote:
> andrew cooke wrote:
> > What am I missing this time? :o(
> Nothing. It's a bug. :-(
Sweet :o)
Thanks - do you want me to raise an issue or will you?
Cheers,
Andrew
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andrew cooke wrote:
As ever, I guess it's most likely I've misunderstood something, but in
Python 2.6 lookback seems to actually be lookahead. All the following
tests pass:
from re import compile
assert compile('(a)b(?<=(?(2)x|c))(c)').match('abc')
assert not compile('(
As ever, I guess it's most likely I've misunderstood something, but in
Python 2.6 lookback seems to actually be lookahead. All the following
tests pass:
from re import compile
assert compile('(a)b(?<=(?(2)x|c))(c)').match('abc')
assert not compile('(a)b(?<=(?(2)b|x))(c)'
On Nov 28, 2007 1:23 PM, Paul McGuire <[EMAIL PROTECTED]> wrote:
> On Nov 28, 11:32 am, "Ryan Krauss" <[EMAIL PROTECTED]> wrote:
> > I need to parse the following string:
> >
> > $$\pmatrix{{\it x_2}\cr 0\cr 1\cr }=\pmatrix{\left({{{\it m_2}\,s^2
> > }\over{k}}+1\right)\,{\it x_1}-{{F}\over{k}}\cr
Interesting. Thanks Paul and Tim. This looks very promising.
Ryan
On Nov 28, 2007 1:23 PM, Paul McGuire <[EMAIL PROTECTED]> wrote:
> On Nov 28, 11:32 am, "Ryan Krauss" <[EMAIL PROTECTED]> wrote:
> > I need to parse the following string:
> >
> > $$\pmatrix{{\it x_2}\cr 0\cr 1\cr }=\pmatrix{\left
Paul McGuire wrote:
> On Nov 28, 1:23 pm, Paul McGuire <[EMAIL PROTECTED]> wrote:
>> As Tim Grove points out, ...
>
> s/Grove/Chase/
>
> Sorry, Tim!
No problem...it's not like there aren't enough Tim's on the list
as it is. :)
-tkc
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On Nov 28, 1:23 pm, Paul McGuire <[EMAIL PROTECTED]> wrote:
> As Tim Grove points out, ...
s/Grove/Chase/
Sorry, Tim!
-- Paul
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On Nov 28, 11:32 am, "Ryan Krauss" <[EMAIL PROTECTED]> wrote:
> I need to parse the following string:
>
> $$\pmatrix{{\it x_2}\cr 0\cr 1\cr }=\pmatrix{\left({{{\it m_2}\,s^2
> }\over{k}}+1\right)\,{\it x_1}-{{F}\over{k}}\cr -{{{\it m_2}\,s^2\,F
> }\over{k}}-F+\left({\it m_2}\,s^2\,\left({{{\it m_
> The trick is that there are extra curly braces inside the \pmatrix{ }
> strings and I don't know how to write a regexp that would count the
> number of open and close curly braces and make sure they match, so
> that it can find the correct ending curly brace.
This criterion is pretty much a deal
I need to parse the following string:
$$\pmatrix{{\it x_2}\cr 0\cr 1\cr }=\pmatrix{\left({{{\it m_2}\,s^2
}\over{k}}+1\right)\,{\it x_1}-{{F}\over{k}}\cr -{{{\it m_2}\,s^2\,F
}\over{k}}-F+\left({\it m_2}\,s^2\,\left({{{\it m_2}\,s^2}\over{k}}+1
\right)+{\it m_2}\,s^2\right)\,{\it x_1}\cr 1\cr }
Precise? The OP asked for "tokens".
#>>> re.search(r"(and|or|xor)\s*#", "a = the_operand # gotcha!")
#<_sre.SRE_Match object at 0x00AE6620>
Try this:
#>>> re.search(r"\b(and|or|xor)\s*#", "a = the_operand # should fail")
#>>> re.search(r"\b(and|or|xor)\s*#", "and # OK")
#<_sre.SRE_Match object a
On 2006-04-11, Michael McGarry <[EMAIL PROTECTED]> wrote:
> Tim,
>
> for some reason that does not seem to do the trick.
>
> I am testing it with grep. (i.e., grep -e '(and|or|xor)\s*#' myfile)
Try with grep -P, which means use perl-compatible regexes as opposed to
POSIX ones. I only know for sure
(-:
Sorry about Tim. He's not very imaginative. He presumed that because
you asked on comp.lang.python that you would be testing it with Python.
You should have either (a) asked your question on
comp.toolswithfunnynames.grep or (b) not presumed that grep's re syntax
is the same as Python's.
:-)
My
> I am testing it with grep. (i.e., grep -e '(and|or|xor)\s*#' myfile)
Well, you asked for the python regexp...different
environments use different regexp parsing engines. Your
response is akin to saying "the example snippet of python
code you gave me doesn't work in my Pascal program".
For g
On 2006-04-11, Michael McGarry <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I would like to form a regular expression to find a few different
> tokens (and, or, xor) followed by some variable number of whitespace
> (i.e., tabs and spaces) followed by a hash mark (i.e., #). What would
> be the regular expre
In my opinion you would be best to use a tool like Kiki.
http://project5.freezope.org/kiki/index.html/#
This will allow you to paste in the actual text you want to search and
then play with different RE's and set flags with a simple mouse click
so you can find just what you want. Rember what re.D
Am Dienstag 11 April 2006 21:16 schrieb Michael McGarry:
> I am testing it with grep. (i.e., grep -e '(and|or|xor)\s*#' myfile)
Test it with Python's re-module, then. \s for matching Whitespace is specific
to Python (AFAIK). And as you've asked in a Python Newsgroup, you'll get
Python-answers he
"Michael McGarry" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Hi,
>
> I would like to form a regular expression to find a few different
> tokens (and, or, xor) followed by some variable number of whitespace
> (i.e., tabs and spaces) followed by a hash mark (i.e., #). What would
>
Tim,
for some reason that does not seem to do the trick.
I am testing it with grep. (i.e., grep -e '(and|or|xor)\s*#' myfile)
Michael
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> I would like to form a regular expression to find a few
> different tokens (and, or, xor) followed by some variable
> number of whitespace (i.e., tabs and spaces) followed by
> a hash mark (i.e., #). What would be the regular
> expression for this?
(and|or|xor)\s*#
Unless "varible numb
Hi,
I would like to form a regular expression to find a few different
tokens (and, or, xor) followed by some variable number of whitespace
(i.e., tabs and spaces) followed by a hash mark (i.e., #). What would
be the regular expression for this?
Thanks for any help,
Michael
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http://mail.pytho
On Wed, 1 Dec 2004 07:48:24 -0600, Philippe C. Martin
<[EMAIL PROTECTED]> wrote:
I realize this is more a regexp question than a python question, but
maybe one
of the re object could help me:
I have wish to know how to _no_ match:
This is but an example of the data I handle:
xx xx xx
Hello Philippe,
> What I would rather do is.
>
> "get the data block that is _not_ between brackets or parenthesis i.e; 'xx
> xx
> xx xx xx xx xx' knowing that the intial string could be:
See http://docs.python.org/lib/re-syntax.html and search for "negative
lookahead"
HTH.
--
---
I realize this is more a regexp question than a python question, but maybe one
of the re object could help me:
I have wish to know how to _no_ match:
This is but an example of the data I handle:
xx xx xx xx xx xx xx [yy yy yy yy yy yy yy] (zz zz zz zz)
I currently can retrieve the three group
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