[issue15616] logging.FileHandler not correctly created with PyYaml (unpickling problems?)

2012-08-10 Thread Jordi Puigsegur 

New submission from Jordi Puigsegur:

logging.FileHandler and logging.RotatingFileHandler (haven't tried other 
handlers) do not get correctly initialized in python 2.7 when loaded using  
PyYaml. Therefore I suspect that there is some problem with the implementation 
of the pickle protocol of these clases in python 2.7.

Attached you can find a small test to reproduce the problem. It works in python 
2.5 and 2.6 but fails in python 2.7. In all cases I've used PyYaml 3.10.

--
components: Extension Modules
messages: 167864
nosy: jordipf
priority: normal
severity: normal
status: open
title: logging.FileHandler not correctly created with PyYaml (unpickling 
problems?)
type: crash
versions: Python 2.7

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[issue15616] logging.FileHandler not correctly created with PyYaml (unpickling problems?)

2012-08-10 Thread Jordi Puigsegur 

Jordi Puigsegur added the comment:

import logging
import logging.handlers
import yaml

logger = logging.getLogger() # root logger

# Option 1 - OK
##handler = logging.handlers.RotatingFileHandler(filename = "test.log", 
maxBytes = 262144, backupCount = 3)

# Option 2 - RotatingFileHandler fails when created through yaml
handler = yaml.load("""
!!python/object/new:logging.handlers.RotatingFileHandler
kwds:
filename: test.log
maxBytes: 262144
backupCount: 3
""")

# Option 3 - FileHandler also fails when created through yaml
##handler = yaml.load("""
##!!python/object/new:logging.FileHandler
##kwds:
##filename: test.log
##""")

logger.addHandler(handler)

logger.warning("test handler")

--

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[issue15616] logging.FileHandler not correctly created with PyYaml (unpickling problems?)

2012-08-10 Thread Jordi Puigsegur 

Jordi Puigsegur added the comment:

Thanks for your answer.

I am not sure it is a PyYaml bug. Did you notice that the same code works 
perfectly (with the same version of PyYaml) using python 2.6 and python 2.5? 

Could it be that the issue lies in some change in the way the pickle protocol 
is implemented in logging classes?

--
status: pending -> open

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[issue15616] logging.FileHandler not correctly created with PyYaml (unpickling problems?)

2012-08-10 Thread Jordi Puigsegur 

Jordi Puigsegur added the comment:

This is the output of your script when run in python 2.6 and the exact same 
PyYaml version:

C:\>test.py
RotatingFileHandler using code: 
{'backupCount': 3,
 'baseFilename': 'C:\\test.log',
 'encoding': None,
 'filters': [],
 'formatter': None,
 'level': 0,
 'lock': <_RLock(None, 0)>,
 'maxBytes': 262144,
 'mode': 'a',
 'stream': }
RotatingFileHandler using YAML: 
{'backupCount': 3,
 'baseFilename': 'C:\\test.log',
 'encoding': None,
 'filters': [],
 'formatter': None,
 'level': 0,
 'lock': <_RLock(None, 0)>,
 'maxBytes': 262144,
 'mode': 'a',
 'stream': }
FileHandler using code: 
{'baseFilename': 'C:\\test.log',
 'encoding': None,
 'filters': [],
 'formatter': None,
 'level': 0,
 'lock': <_RLock(None, 0)>,
 'mode': 'a',
 'stream': }
FileHandler using YAML: 
{'baseFilename': 'C:\\test.log',
 'encoding': None,
 'filters': [],
 'formatter': None,
 'level': 0,
 'lock': <_RLock(None, 0)>,
 'mode': 'a',
 'stream': }

--

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[issue15616] logging.FileHandler not correctly created with PyYaml (unpickling problems?)

2012-08-11 Thread Jordi Puigsegur 

Jordi Puigsegur added the comment:

It looks like the change from old to new style classes in python could have 
triggered this issue.

I've created an issue in PyYaml (http://pyyaml.org/ticket/283). 

Thanks again!

--
status: open -> pending

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