Why isn't my re.sub replacing the contents of my MS Word file?

[wxjmfauth at gmail.com]

Le mardi 13 mai 2014 22:26:51 UTC+2, MRAB a écrit :
> On 2014-05-13 20:01, scottcabit at gmail.com wrote:
> 
> > On Tuesday, May 13, 2014 9:49:12 AM UTC-4, Steven D'Aprano wrote:
> 
> >>
> 
> >> You may have missed my follow up post, where I said I had not noticed you
> 
> >> were operating on a binary .doc file.
> 
> >>
> 
> >> If you're not willing or able to use a full-blown doc parser, say by
> 
> >> controlling Word or LibreOffice, the other alternative is to do something
> 
> >> quick and dirty that might work most of the time. Open a doc file, or
> 
> >> multiple doc files, in a hex editor and *hopefully* you will be able to
> 
> >> see chunks of human-readable text where you can identify how en-dashes
> 
> >> and similar are stored.
> 
> >
> 
> >    I created a .doc file and opened it with UltraEdit in binary (Hex) mode. What I see is that there are two characters, one for ndash and one for mdash, each a single byte long. 0x96 and 0x97.
> 
> >    So I tried this: fStr = re.sub(b'\0x96',b'-',fStr)
> 
> >
> 
> >    that did nothing in my file. So I tried this: fStr = re.sub(b'0x97',b'-',fStr)
> 
> >
> 
> >    which also did nothing.
> 
> >    So, for fun I also tried to just put these wildcards in my re.findall so I added |Part \0x96|Part \0x97    to no avail.
> 
> >
> 
> >    Obviously 0x96 and 0x97 are NOT being interpreted in a re.findall or re.sub as hex byte values of 96 and 97 hexadecimal using my current syntax.
> 
> >
> 
> >    So here's my question...if I want to replace all ndash  or mdash values with regular '-' symbols using re.sub, what is the proper syntax to do so?
> 
> >
> 
> >    Thanks!
> 
> >
> 
> 0x96 is a hexadecimal literal for an int. Within a string you need \x96
> 
> (it's \x for 2 hex digits, \u for 4 hex digits, \U for 8 hex digits).


----------------

>>> b'0x61' == b'0x61'
True
>>> b'0x96' == b'\x96'
False


- Python and the coding of characters is an unbelievable
mess.
- Unicode a joke.
- I can make Python failing with any valid sequence of
chars I wish.
- There is a difference between "look, my code work with
my chars" and "this code is safely working with any chars".

jmf