Jinja and non-ASCII characters (was Re: Prepare accented characters for HTML)
Peter J. Holzer
hjp-python at hjp.at
Fri Mar 29 10:51:36 EDT 2019
On 2019-03-29 12:56:00 +0100, Thomas Jollans wrote:
> On 29/03/2019 12.39, Tony van der Hoff wrote:
> > Running in browser:
> > http://localhost/~tony/private/home/learning/jinja/minimal/minimal.py
> >
> > In apache2.access.log:
>
> So it's running in apache!
>
> Now the question is what apache is doing. Is it running it as a CGI
> script? Is it doing something clever for Python files (maybe involving
> Python 2?)
>
> ... wild guess: if the script is running as CGI in an enviroment with an
> ASCII-using "C" locale, with Python 3.5, you wouldn't be able to print
> non-ASCII characters by default. I think. In any case I remember reading
> about this problem (if this is the problem) being fixed in a newer
> version of Python.
This is very likely correct. I also had this problem with the default
Apache configuration on Debian, which explicitely sets LANG=C (Edit
/etc/apache2/envvars to change this).
The behaviour can be easily reproduced on the command line:
hrunkner:~/tmp 15:27 :-) 1021% ./annee
Content-type: text/html
French: année
3.5.3 (default, Sep 27 2018, 17:25:39)
[GCC 6.3.0 20170516]
hrunkner:~/tmp 15:27 :-) 1022% echo $LANG
en_US.UTF-8
hrunkner:~/tmp 15:34 :-) 1023% LANG=C
hrunkner:~/tmp 15:34 :-) 1024% ./annee
Content-type: text/html
Traceback (most recent call last):
File "./annee", line 6, in <module>
print(Template("French: {{french}}").render({"french": "ann\xe9e"}))
UnicodeEncodeError: 'ascii' codec can't encode character '\xe9' in position 11: ordinal not in range(128)
This was fixed(?) in Python 3.7.
hp
--
_ | Peter J. Holzer | we build much bigger, better disasters now
|_|_) | | because we have much more sophisticated
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__/ | http://www.hjp.at/ | -- Ross Anderson <https://www.edge.org/>
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