Vinay Sajip added the comment:
In recent versions of Python, information *is* printed which allows pinpointing
the source of the formatting error. Consider the following script, logex.py:
import logging
logger = logging.getLogger(__name__)
def test():
logger.debug('The result is ', 'abc')
def main():
test()
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)
main()
When this is run with Python 2.7:
$ python logex.py
Traceback (most recent call last):
File "/usr/lib/python2.7/logging/__init__.py", line 842, in emit
msg = self.format(record)
File "/usr/lib/python2.7/logging/__init__.py", line 719, in format
return fmt.format(record)
File "/usr/lib/python2.7/logging/__init__.py", line 464, in format
record.message = record.getMessage()
File "/usr/lib/python2.7/logging/__init__.py", line 328, in getMessage
msg = msg % self.args
TypeError: not all arguments converted during string formatting
Logged from file logex.py, line 6
With Python 3.2:
$ python3.2 logex.py
Traceback (most recent call last):
File "/usr/lib/python3.2/logging/__init__.py", line 937, in emit
msg = self.format(record)
File "/usr/lib/python3.2/logging/__init__.py", line 812, in format
return fmt.format(record)
File "/usr/lib/python3.2/logging/__init__.py", line 551, in format
record.message = record.getMessage()
File "/usr/lib/python3.2/logging/__init__.py", line 319, in getMessage
msg = msg % self.args
TypeError: not all arguments converted during string formatting
Logged from file logex.py, line 6
As you can see, the filename and line number are identified, so you can see
precisely where the formatting error is.
----------
components: +Library (Lib) -Extension Modules
resolution: -> invalid
status: open -> pending
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Python tracker <[email protected]>
<http://bugs.python.org/issue18671>
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