On 11/07/2011 09:23 AM, Jaroslav Dobrek wrote:
Hello,
in Python3, I often have this problem: I want to do something with
every line of a file. Like Python3, I presuppose that every line is
encoded in utf-8. If this isn't the case, I would like Python3 to do
something specific (like skipping the line, writing the line to
standard error, ...)
Like so:
try:
....
except UnicodeDecodeError:
...
Yet, there is no place for this construction. If I simply do:
for line in f:
print(line)
this will result in a UnicodeDecodeError if some line is not utf-8,
but I can't tell Python3 to stop:
This will not work:
for line in f:
try:
print(line)
except UnicodeDecodeError:
...
because the UnicodeDecodeError is caused in the "for line in f"-part.
How can I catch such exceptions?
Note that recoding the file before opening it is not an option,
because often files contain many different strings in many different
encodings.
Jaroslav
A file with mixed encodings isn't a text file. So open it with 'rb'
mode, and use read() on it. Find your own line-endings, since a given
'\n' byte may or may not be a line-ending.
Once you've got something that looks like a line, explicitly decode it
using utf-8. Some invalid lines will give an exception and some will
not. But perhaps you've got some other gimmick to tell the encoding for
each line.
--
DaveA
--
http://mail.python.org/mailman/listinfo/python-list
