[BangPypers] xlrd

[Jayanth Koushik]

Actually, that might be outdated. I grepped the xlrd source for this
particular exception. It's raised only from once place: xlrd/book.py:896
(assuming you're using the latest version: 0.9.3). The particular function
'handle_filepass' is weird...:

    def handle_filepass(self, data):
        if self.verbosity >= 2:
            logf = self.logfile
            fprintf(logf, "FILEPASS:\n")
            hex_char_dump(data, 0, len(data), base=0, fout=logf)
            if self.biff_version >= 80:
                kind1, = unpack('<H', data[:2])
                if kind1 == 0: # weak XOR encryption
                    key, hash_value = unpack('<HH', data[2:])
                    fprintf(logf,
                        'weak XOR: key=0x%04x hash=0x%04x\n',
                        key, hash_value)
                elif kind1 == 1:
                    kind2, = unpack('<H', data[4:6])
                    if kind2 == 1: # BIFF8 standard encryption
                        caption = "BIFF8 std"
                    elif kind2 == 2:
                        caption = "BIFF8 strong"
                    else:
                        caption = "** UNKNOWN ENCRYPTION METHOD **"
                    fprintf(logf, "%s\n", caption)
        raise XLRDError("Workbook is encrypted")

Is that function only handling encryption if verbosity is greater than 2?

Jayanth



On Thu, Aug 21, 2014 at 4:50 PM, Jayanth Koushik <jnkoushik at gmail.com>
wrote:

> Are you sure the files aren't encrypted? If they are, then xlrd can't
> handle them.
>
> http://www.lexicon.net/sjmachin/README.html (Look at 'Unlikely to be
> done')
>
> Jayanth
>
>
>
> On Thu, Aug 21, 2014 at 3:26 PM, Shashidhar Paragonda <
> shashidhar85 at gmail.com> wrote:
>
>> Hello all,
>> >>> I am using xlrd library to read .xls files,
>> >>> wb = xlrd.open_workbook("workbook_name.xls")
>> >>> when I execute I get error :
>>
>> Traceback (most recent call last):
>>   File "rater_document_parser.py", line 72, in <module>
>>     wb = xlrd.open_workbook(row.SERVER_MOUNT_PATH)
>>   File "/usr/lib/python2.6/site-packages/xlrd/__init__.py", line 435, in
>> open_workbook
>>     ragged_rows=ragged_rows,
>>   File "/usr/lib/python2.6/site-packages/xlrd/book.py", line 116, in
>> open_workbook_xls
>>     bk.parse_globals()
>>   File "/usr/lib/python2.6/site-packages/xlrd/book.py", line 1178, in
>> parse_globals
>>     self.handle_filepass(data)
>>   File "/usr/lib/python2.6/site-packages/xlrd/book.py", line 896, in
>> handle_filepass
>>     raise XLRDError("Workbook is encrypted")
>> xlrd.biffh.XLRDError: Workbook is encrypted
>>
>> >>> when I manually open, it open
>> >>> any suggession on resolving this error.
>> >>>Thank you.
>>
>>
>>
>> -----------------------------------
>> Regards,
>>
>> Shashidhar N.Paragonda
>> shashidhar85 at gmail.com
>> +919900093835
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>
>