regular expresions and dolar sign ($) in source string

[Jax]

Hi

I encountered problem with dolar sign in source string. It seems that $ require
special threatening. Below is copy of session with interactive Python's shell:

Python 2.5.2 (r252:60911, Jan  8 2009, 12:17:37)
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> a = unicode(r"(instead of $399.99)", "utf8")
>>> print re.search(unicode(r"^\(instead of.*(\d+[.]\d+)\)$", "utf8"),
a).group(1)
9.99
>>> print re.search(unicode(r"^\(.*(\d+[.]\d+)\)$", "utf8"), a).group(1)
9.99
>>> print re.search(unicode(r"^\(.*\$(\d+[.]\d+)\)$", "utf8"), a).group(1)
399.99

My question is: Why only third regular expression is correct?

Please help! It boggles my mind.

Jax
--
http://mail.python.org/mailman/listinfo/python-list

Re: unicode(lString, "utf8") vs. lString.encode("utf8") vs. ur"jakiś tekst"

[Jax]

Sorry, my mistake.
My interntion was post this message on pl.comp.lang.python.

Jax
--
http://mail.python.org/mailman/listinfo/python-list

unicode(lString, "utf8") vs. lString.encode("utf8") vs. ur"jakiś tekst"

[Jax]

Witam

Zakładam, że kod Pythona w drugiej lini ma:
# -*- coding: utf-8 -*-

oraz gdzieś na początku:
reload(sys)
sys.setdefaultencoding('utf8')

No i mam takie pytania odnośnie unicode w utf8:

Czy obie poniższe linie dają ten sam efekt, czyli obiekt unicode zakodowany w
utf8?
lString = unicode(lString, "utf8")
lString = lString.encode("utf8")

Konkretnie chodzi mi czy aby mieć obiekt unicode zakodowany w utf8 muszę robić
coś takiego:
lString = unicode(lString.decode("ISO-8859-15").encode("utf8"), "utf8")
czy może wystarczy:
lString = lString.decode("ISO-8859-15").encode("utf8")

Dodatkowo mam pytanie: Czy aby mieć ze stringu podanego w kodzie pythona obiekt
unicode zakodowany w utf8 zawsze muszę robić:
lString = unicode("jakiś tekst", "utf8")
czy może wystarczy
lString = ur"jakiś tekst"

Pytam, bo ciągłe klepanie unicode(xxx, "utf8") jest męczące.

z góry dzięki

Jax
--
http://mail.python.org/mailman/listinfo/python-list

decode command line parameters - recomendend way

[Jax]

Hello

I want add full Unicode support in my scripts. Now I have encoutered theoretical
problem with command line parameters. I can't find anything in that mater. But
I develop solution which seems to work. Question is: Is it recommendend way to
decode command line parameters:

lFileConfig = None
if len(sys.argv) > 1:
   lFileConfig = unicode(sys.argv[1], locale.getpreferredencoding())

Or maybe there is other solution?

Jax

ps:
$ python --version
Python 2.5.2

--
http://mail.python.org/mailman/listinfo/python-list