I think this is. Can you please open an issue about it?

On Tuesday, 27 March 2018 13:32:15 UTC-5, alexandre.he...@gmail.com wrote:
>
> Hello All,
>
> I'm an absolute newbie with web2py so I'm not sure if the issue lies in 
> web2py/3.6 or my own mistakes... My apologies in advance.
>
> I encounter this error in a db.my_table.update_or_insert(..)
>
> UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfe in position 96328: 
> invalid start byte'
>
>
> What I'm trying to do:
> I have a text file that is the representation of a datamodel in a specific 
> COTS format.
> I want to parse it, list the tables to be created and create them actually.
> I know that the file countains non-utf-8 characters, that's why I open it 
> in binary:
>
>        dpm_file = gzip.open(filepath,'rb')
>
> ... parse it using binary regex: (I imported the 'regex' module)
>         regexp = regex.compile(b':columns 
> (\(((?>[^()]+)|(?1))*\))',regex.DOTALL)
>         header_classes = regexp.findall(one_format_text)[0]
>
> ... and insert the results in db blob fields: (the error occurs here)
>     db.dpm_header.update_or_insert(db.dpm_header.dpm == my_dpm_id, dpm = 
> my_dpm_id, header_classes  = header_classes, header_objects  = 
> header_objects)
>
> I defined blob fields because I thought that it was the way to write 
> directly in binary in database.
> I really wanted to use binary preciselly to avoid to manage the 
> encoding/decoding issues.
>
> In addition, this project is an attempt to transport in web2py an older 
> project that was working perfectly in pure python 3.6.3 (unix and windows) 
> (except that instead of creating tables in a DB, I created text files in a 
> filer...).
> Is it a issue on web2py/python 3.6? Or my misunderstanding on database 
> management...
>
> Thank you for your help!
>
> Here is the trace
>
> Traceback (most recent call last):
>   File "D:\web\zz\web2py\gluon\restricted.py", line 219, in restricted
>     exec(ccode, environment)
>   File "D:/web/zz/web2py/applications/dpm_manager/controllers/default.py" 
> <http://127.0.0.1:8000/admin/default/edit/dpm_manager/controllers/default.py>,
>  line 175, in <module>
>   File "D:\web\zz\web2py\gluon\globals.py", line 419, in <lambda>
>     self._caller = lambda f: f()
>   File "D:\web\zz\web2py\gluon\tools.py", line 3982, in f
>     return action(*a, **b)
>   File "D:/web/zz/web2py/applications/dpm_manager/controllers/default.py" 
> <http://127.0.0.1:8000/admin/default/edit/dpm_manager/controllers/default.py>,
>  line 131, in analyze
>     header_classes  = header_classes)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\objects.py", line 811, in 
> update_or_insert
>     record = self(_key)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\objects.py", line 565, in 
> __call__
>     orderby_on_limitby=False).first()
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\objects.py", line 2250, in 
> select
>     return adapter.select(self.query, fields, attributes)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\sqlite.py", line 
> 82, in select
>     return super(SQLite, self).select(query, fields, attributes)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\base.py", line 
> 762, in select
>     return self._select_aux(sql, fields, attributes, colnames)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\base.py", line 
> 741, in _select_aux
>     return processor(rows, fields, colnames, cacheable=cacheable)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\base.py", line 
> 305, in parse
>     for row in rows
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\base.py", line 
> 302, in <listcomp>
>     self._parse(
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\base.py", line 
> 231, in _parse
>     value = self.parse_value(value, fit, ft, blob_decode)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\adapters\base.py", line 
> 198, in parse_value
>     return self.parser.parse(value, field_itype, field_type)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\parsers\__init__.py", line 
> 101, in parse
>     return self.registered[field_itype](value, field_type)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\parsers\__init__.py", line 
> 76, in __call__
>     return self.call(value, field_type)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\parsers\__init__.py", line 
> 73, in _call
>     return self.f(self.parser, value)
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\parsers\base.py", line 37, 
> in _blob
>     return to_native(b64decode(to_bytes(value)))
>   File "D:\web\zz\web2py\gluon\packages\dal\pydal\_compat.py", line 82, in 
> to_native
>     return obj.decode(charset, errors)
> UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfe in position 96328: 
> invalid start byte
>
>

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