UnicodeDecodeError issue

[Ferrous Cranus]

Στις 1/9/2013 5:08 μμ, ο/η Ferrous Cranus έγραψε:
> Στις 1/9/2013 11:35 πμ, ο/η Steven D'Aprano έγραψε:
>> On Sat, 31 Aug 2013 23:50:23 -0700, Ferrous Cranus wrote:
>>
>>> Τη Σάββατο, 31 Αυγούστου 2013 9:41:27 π.μ. UTC+3, ο χρήστης Ferrous
>>> Cranus έγραψε:
>>>> Suddenly my webiste superhost.gr running my main python script presents
>>>>
>>>> me with this error:
>>>>
>>>>
>>>>
>>>> Code:
>>>>
>>>> UnicodeDecodeError('utf-8', b'\xb6\xe3\xed\xf9\xf3\xf4\xef
>>>>
>>>> \xfc\xed\xef\xec\xe1 \xf3\xf5\xf3\xf4\xde\xec\xe1\xf4\xef\xf2', 0, 1,
>>>>
>>>> 'invalid start byte')
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Does anyone know what this means?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Webhost <http://superhost.gr>
>>>
>>> Good morning Steven,
>>>
>>> Ye i'm aware that i need to define variables before i try to make use of
>>> them. I have study all of your examples and then re-view my code and i
>>> can *assure* you that the line statement that tied to set the 'host'
>>> variable is very early at the top of the script(of course after
>>> imports), and the cur.execute comes after.
>>>
>>> The problem here is not what you say, that i try to drink k a coffee
>>> before actually making one first but rather than i cannot drink the
>>> coffee although i know *i have tried* to make one first.
>>>
>>>
>>> i will upload the code for you to prove my sayings at pastebin.
>>>
>>> http://pastebin.com/J97guApQ
>>
>>
>> You are mistaken. In line 20-25, you have this:
>>
>> try:
>>      gi = pygeoip.GeoIP('/usr/local/share/GeoIPCity.dat')
>>      city = gi.time_zone_by_addr( os.environ['REMOTE_ADDR'] ) or
>>          gi.time_zone_by_addr( os.environ['HTTP_CF_CONNECTING_IP'] )
>>      host = socket.gethostbyaddr( os.environ['REMOTE_ADDR'] )[0] or
>>          socket.gethostbyaddr( os.environ['HTTP_CF_CONNECTING_IP'] )[0]
>>          or "Proxy Detected"
>> except Exception as e:
>>          print( repr(e), file=open( '/tmp/err.out', 'w' ) )
>>
>>
>> An error occurs inside that block, *before* host gets set. Who knows what
>> the error is? You have access to the err.out file, but apparently you
>> aren't reading it to find out.
>>
>> Then, 110 lines later, at line 135, you try to access the value of "host"
>> that never got set.
>>
>> Your job is to read the error in /tmp/err.out, see what is failing, and
>> fix it.
>>
>>
>
> But i'm Steven! That why i make use of it to read it immediately after
> my script run at browser time.
>
> i have even included a sys.exit(0) after the try:/except block:
>
> Here is it:
>
>
> errout = open( '/tmp/err.out', 'w' )        # opens and truncates the
> error output file
> try:
>      gi = pygeoip.GeoIP('/usr/local/share/GeoIPCity.dat')
>      city = gi.time_zone_by_addr( os.environ['REMOTE_ADDR'] ) or
> gi.time_zone_by_addr( os.environ['HTTP_CF_CONNECTING_IP'] )
>      host = socket.gethostbyaddr( os.environ['REMOTE_ADDR'] )[0] or
> socket.gethostbyaddr( os.environ['HTTP_CF_CONNECTING_IP'] )[0] or "Proxy
> Detected"
> except Exception as e:
>      print( "Xyzzy exception-", repr( sys.exc_info() ), file=errout )
>      errout.flush()
>
> sys.exit(0)
>
> and the output of error file is:
>
>
> nikos at superhost.gr [~]# cat /tmp/err.out
> UnicodeDecodeError('utf-8', b'\xb6\xe3\xed\xf9\xf3\xf4\xef
> \xfc\xed\xef\xec\xe1 \xf3\xf5\xf3\xf4\xde\xec\xe1\xf4\xef\xf2', 0, 1,
> 'invalid start byte')
>


But i noticed that err.out and /usr/local/apache/logs/error_log produced 
different output.

In any case i check both:


nikos at superhost.gr [~]# chmod 777 /tmp/err2.out

ouput of error_log
nikos at superhost.gr [~]# [Sun Sep 01 14:23:46 2013] [error] [client 
173.245.49.120] Premature end of script headers: metrites.py
[Sun Sep 01 14:23:46 2013] [error] [client 173.245.49.120] File does not 
exist: /home/nikos/public_html/500.shtml



Also i have even changed output error filename.
turns out empty.

nikos at superhost.gr [~]# cat /tmp/err2.out

-- 
Webhost <http://superhost.gr>