Re: [Orgmode] OT: Python help
On Tue, 20 Jul 2010 14:08:32 +0100, Peter Westlake wrote:
> On Tue, 20 Jul 2010 16:58 +0530, "Puneeth" wrote:
> Here's a Pythonic way to do it, tested:
> import re
> my_string = "Hello\nWorld"
> pattern = re.compile('^',re.MULTILINE)
> my_new_string = re.sub(pattern, '> ', my_string)
> This still might not be quite right, as it will turn "Hello\nWorld\n"
> into "> Hello\n> World\n> ". Avoid that by using a negative lookahead
> for the end of the string:
> my_string = "Hello\n\nWorld\n"
> pattern = re.compile('^(?!\Z)',re.MULTILINE)
> my_new_string = re.sub(pattern, '> ', my_string)
> print my_new_string
> gives:
>> Hello
>>
>> World
Although python does not recommend TIMTOWTDI, but I would
use the following function
s = lambda str: ''.join(['< ' + s for s in str.splitlines(True)])
s("Hello\n\nWorld\n")
I think it is much nicer and clearer to me -- probably
because I use a lot of haskell. And the following is the
function s in haskell
s = unlines . map ("< " ++) . lines
Just my 2c.
--
Jc/*__o/*
X<\ * (__
Y*/\ <
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Re: [Orgmode] OT: Python help
On Tue, 20 Jul 2010 16:58 +0530, "Puneeth" wrote:
> On Tue, Jul 20, 2010 at 4:50 PM, Puneeth wrote:
> > On Tue, Jul 20, 2010 at 4:43 PM, Carsten Dominik wrote:
> >> Please show me the full line of code, I am currently editing a python
> >> script
> >> without any knowledge of python...
> >
> > my_string = "Hello\nWorld"
> > my_new_string = my_string.replace("\n", "\n> ")
>
> Sorry, this code (obviously) doesn't prepend ">" to the first line
> Add this line to do that.
>
> my_new_string = "> " + my_new_string
Here's a Pythonic way to do it, tested:
import re
my_string = "Hello\nWorld"
pattern = re.compile('^',re.MULTILINE)
my_new_string = re.sub(pattern, '> ', my_string)
This still might not be quite right, as it will turn "Hello\nWorld\n"
into "> Hello\n> World\n> ". Avoid that by using a negative lookahead
for the end of the string:
my_string = "Hello\n\nWorld\n"
pattern = re.compile('^(?!\Z)',re.MULTILINE)
my_new_string = re.sub(pattern, '> ', my_string)
print my_new_string
gives:
> Hello
>
> World
Peter.
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Re: [Orgmode] OT: Python help
On Jul 20, 2010, at 3:08 PM, Peter Westlake wrote:
On Tue, 20 Jul 2010 16:58 +0530, "Puneeth"
wrote:
On Tue, Jul 20, 2010 at 4:50 PM, Puneeth wrote:
On Tue, Jul 20, 2010 at 4:43 PM, Carsten Dominik
wrote:
Please show me the full line of code, I am currently editing a
python script
without any knowledge of python...
my_string = "Hello\nWorld"
my_new_string = my_string.replace("\n", "\n> ")
Sorry, this code (obviously) doesn't prepend ">" to the first line
Add this line to do that.
my_new_string = "> " + my_new_string
Here's a Pythonic way to do it, tested:
import re
my_string = "Hello\nWorld"
pattern = re.compile('^',re.MULTILINE)
my_new_string = re.sub(pattern, '> ', my_string)
This still might not be quite right, as it will turn "Hello\nWorld\n"
into "> Hello\n> World\n> ". Avoid that by using a negative lookahead
for the end of the string:
my_string = "Hello\n\nWorld\n"
pattern = re.compile('^(?!\Z)',re.MULTILINE)
my_new_string = re.sub(pattern, '> ', my_string)
print my_new_string
gives:
Hello
World
Peter.
Great. I learned something today. Thanks!
- Carsten
- Carsten
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Re: [Orgmode] OT: Python help
On Tue, Jul 20, 2010 at 4:50 PM, Puneeth wrote:
> On Tue, Jul 20, 2010 at 4:43 PM, Carsten Dominik wrote:
>> Please show me the full line of code, I am currently editing a python script
>> without any knowledge of python...
>
> my_string = "Hello\nWorld"
> my_new_string = my_string.replace("\n", "\n> ")
Sorry, this code (obviously) doesn't prepend ">" to the first line
Add this line to do that.
my_new_string = "> " + my_new_string
> HTH,
> Puneeth
>
--
Puneeth
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Re: [Orgmode] OT: Python help
On Jul 20, 2010, at 1:20 PM, Puneeth wrote:
On Tue, Jul 20, 2010 at 4:43 PM, Carsten Dominik
wrote:
On Jul 20, 2010, at 1:03 PM, Giovanni Ridolfi wrote:
Carsten Dominik writes:
a python question: How do I prefix every line in a multiline
string
with a string. For example, I would like to add "> " before all
lines
in a string
how about replacing "\n" with "\n > " ?
Please show me the full line of code, I am currently editing a
python script
without any knowledge of python...
my_string = "Hello\nWorld"
my_new_string = my_string.replace("\n", "\n> ")
Thanks, that does work.
- Carsten
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Re: [Orgmode] OT: Python help
Carsten Dominik writes:
> On Jul 20, 2010, at 1:03 PM, Giovanni Ridolfi wrote:
>
>> Carsten Dominik writes:
>>
>>
>>> a python question: How do I prefix every line in a multiline string
>>> with a string. For example, I would like to add "> " before all
>>> lines
>>> in a string
>>
>> how about replacing "\n" with "\n > " ?
>
> Please show me the full line of code, I am currently editing a python
> script without any knowledge of python...
>
> :(
Carsten , I do not know python as well :-/
I found:
1. from python docs: http://docs.python.org/library/string.html
string.replace(str, old, new[, maxreplace])
Return a copy of string str with all occurrences of substring old replaced by
new. If the optional argument maxreplace is given, the first maxreplace
occurrences are replaced.
2. while googling:
"Python like this:
python -c 'import sys; print sys.stdin.read().replace("\n", " ")' < days.txt"
http://linux.dsplabs.com.au/rmnl-remove-new-line-characters-tr-awk-perl-sed-c-cpp-bash-python-xargs-ghc-ghci-haskell-sam-ssam-p65/
3. also: http://bytes.com/topic/python/answers/721547-replace-characters-string
# >>> s = "sex_m-designer_bw-size_42"
# >>> s = s.replace('_', '=')
# >>> s = s.replace('-', '&')
# >>> s
# 'sex=m&designer=bw&size=42'
4.
http://stackoverflow.com/questions/930303/python-string-cleanup-manipulation-accented-characters
name-of-the-string.replace(' ', '.') # replace spaces with periods
hth
Giovanni
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Re: [Orgmode] OT: Python help
On Tue, Jul 20, 2010 at 4:43 PM, Carsten Dominik wrote:
>
> On Jul 20, 2010, at 1:03 PM, Giovanni Ridolfi wrote:
>
>> Carsten Dominik writes:
>>
>>
>>> a python question: How do I prefix every line in a multiline string
>>> with a string. For example, I would like to add "> " before all lines
>>> in a string
>>
>> how about replacing "\n" with "\n > " ?
>
> Please show me the full line of code, I am currently editing a python script
> without any knowledge of python...
my_string = "Hello\nWorld"
my_new_string = my_string.replace("\n", "\n> ")
HTH,
Puneeth
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Re: [Orgmode] OT: Python help
On Jul 20, 2010, at 1:03 PM, Giovanni Ridolfi wrote: Carsten Dominik writes: a python question: How do I prefix every line in a multiline string with a string. For example, I would like to add "> " before all lines in a string how about replacing "\n" with "\n > " ? Please show me the full line of code, I am currently editing a python script without any knowledge of python... :( - Carsten ___ Emacs-orgmode mailing list Please use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
Re: [Orgmode] OT: Python help
Carsten Dominik writes: > a python question: How do I prefix every line in a multiline string > with a string. For example, I would like to add "> " before all lines > in a string how about replacing "\n" with "\n > " ? Giovanni ___ Emacs-orgmode mailing list Please use `Reply All' to send replies to the list. Emacs-orgmode@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-orgmode
