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Re: catch UnicodeDecodeError

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Jaroslav Dobrek, 26.07.2012 12:51:
>>> try:
>>>     for line in f: # here text is decoded implicitly
>>>        do_something()
>>> except UnicodeDecodeError():
>>>     do_something_different()
> 
> the code above (without the brackets) is semantically bad: The
> exception is not caught.

Sure it is. Just to repeat myself: if the above doesn't catch the
exception, then the exception did not originate from the place where you
think it did. Again: look at the traceback.


>>> The problem is that vast majority of the thousands of files that I
>>> process are correctly encoded. But then, suddenly, there is a bad
>>> character in a new file. (This is so because most files today are
>>> generated by people who don't know that there is such a thing as
>>> encodings.) And then I need to rewrite my very complex program just
>>> because of one single character in one single file.
>>
>> Why would that be the case? The places to change should be very local in
>> your code.
> 
> This is the case in a program that has many different functions which
> open and parse different
> types of files. When I read and parse a directory with such different
> types of files, a program that
> uses
> 
> for line in f:
> 
> will not exit with any hint as to where the error occurred. I just
> exits with a UnicodeDecodeError.

... that tells you the exact code line where the error occurred. No need to
look around.

Stefan

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catch UnicodeDecodeError jaroslav.dobrek@gmail.com - 2012-07-25 04:05 -0700
  Re: catch UnicodeDecodeError Andrew Berg <bahamutzero8825@gmail.com> - 2012-07-25 06:34 -0500
  Re: catch UnicodeDecodeError Philipp Hagemeister <phihag@phihag.de> - 2012-07-25 13:35 +0200
    Re: catch UnicodeDecodeError jaroslav.dobrek@gmail.com - 2012-07-25 05:09 -0700
    Re: catch UnicodeDecodeError jaroslav.dobrek@gmail.com - 2012-07-25 05:09 -0700
      Re: catch UnicodeDecodeError Dave Angel <d@davea.name> - 2012-07-25 14:50 -0400
        Re: catch UnicodeDecodeError Jaroslav Dobrek <jaroslav.dobrek@gmail.com> - 2012-07-26 00:46 -0700
          Re: catch UnicodeDecodeError Stefan Behnel <stefan_ml@behnel.de> - 2012-07-26 10:28 +0200
            Re: catch UnicodeDecodeError Jaroslav Dobrek <jaroslav.dobrek@gmail.com> - 2012-07-26 03:51 -0700
              Re: catch UnicodeDecodeError Stefan Behnel <stefan_ml@behnel.de> - 2012-07-26 13:15 +0200
                Re: catch UnicodeDecodeError jaroslav.dobrek@gmail.com - 2012-07-26 04:58 -0700
                Re: catch UnicodeDecodeError jaroslav.dobrek@gmail.com - 2012-07-26 04:58 -0700
              Re: catch UnicodeDecodeError Philipp Hagemeister <phihag@phihag.de> - 2012-07-26 14:17 +0200
              Re: catch UnicodeDecodeError Stefan Behnel <stefan_ml@behnel.de> - 2012-07-26 14:24 +0200
          Re: catch UnicodeDecodeError Chris Angelico <rosuav@gmail.com> - 2012-07-26 19:46 +1000
          Re: catch UnicodeDecodeError wxjmfauth@gmail.com - 2012-07-26 03:19 -0700
      Re: catch UnicodeDecodeError Philipp Hagemeister <phihag@phihag.de> - 2012-07-26 14:43 +0200

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