[IronPython] Weird issue with codecs.BOM_UTF8

[Leonides Saguisag]

Thank you for taking the time to reply.  Any idea why this would happen in IronPython but not with the standard Python interpreter?  What is weirding me out is that the exact same script behaves differently depending on whether I use IronPython or the standard Python interpreter.

Thanks!

-- Leo 

-----Original Message-----
From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Michael Foord
Sent: 2009?11?10? 13:17
To: Discussion of IronPython
Subject: Re: [IronPython] Weird issue with codecs.BOM_UTF8

Leonides Saguisag wrote:
> Hi everyone,
>
> I am encountering a weird issue with getting to codecs.BOM_UTF8 to work correctly.  I am using SharpDevelop 3.1.
>
> Here is the test script that I put together:
>
>
> import sys
> sys.path.append(r'D:\Python25\Lib')
> import codecs
>
> print sys.version
> myfile = open(r'D:\Temp\text_file_with_utf8_bom.txt', 'r') lines = 
> myfile.readlines()
> myfile.close()
> if lines[0].startswith(codecs.BOM_UTF8):
> 	print ('UTF-8 BOM detected!')
> else:
> 	print ('UTF-8 BOM not detected!')
>
> myfile = open(r'D:\Temp\text_file_without_utf8_bom.txt', 'r') lines = 
> myfile.readlines()
> myfile.close()
> if lines[0].startswith(codecs.BOM_UTF8):
> 	print ('UTF-8 BOM detected!')
> else:
> 	print ('UTF-8 BOM not detected!')
>
>
> If I run the executable that I get from SharpDevelop this is what I get:
> bin\Debug> Test.exe
> 2.5.0 ()
> UTF-8 BOM detected!
> UTF-8 BOM detected!
>
>
> But if I run the same script using the standard python interpreter, this is what I get:
> bin\Debug> D:\Python25\python.exe ..\..\Program.py
> 2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit (Intel)]
> UTF-8 BOM detected!
> UTF-8 BOM not detected!
>
>
> The script works correctly with the standard python interpreter but for some reason is not working right with IronPython.
>
> Any ideas what is going wrong?
>   
I'm not in a position to check right now, but this could happen if codes.UTF8_BOM is set to the empty string.

Michael

> Thanks!
>
> Best regards,
> -- Leo
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> Users at lists.ironpython.com
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>   


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