Logging module not working with Python3

问题:

I am having issues with the standard logging module. If I open a python2.7 shell and import logging everything works fine:

$ python
>>> import logging
>>>

But if I open a python3.4 shell and import logging I get the following error:

$ python3.4
>>> import logging
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
File "<frozen importlib._bootstrap>", line 2222, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 2164, in _find_spec
File "<frozen importlib._bootstrap>", line 1940, in find_spec
File "<frozen importlib._bootstrap>", line 1916, in _get_spec
File "<frozen importlib._bootstrap>", line 1897, in _legacy_get_spec
File "<frozen importlib._bootstrap>", line 863, in spec_from_loader
File "<frozen importlib._bootstrap>", line 904, in spec_from_file_location
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/logging-0.4.9.6-py3.4.egg/logging/__init__.py", line 618
raise NotImplementedError, 'emit must be implemented '\
                         ^
SyntaxError: invalid syntax

I have no idea what the problem is and can't seem to find anyone else who has had the same issue.

回答1:

You seem to have installed a third party library called logging in your Python 3 environment, which is hiding the standard library version, and one of its files has a typo.

回答2:

logging module is by default there in Python 3 environment .No need to import it.

回答3:

I stupidly created a file called logging.py to try out some log features. Then when trying the code below, it is effectively referring to itself and can't find the debug method.

import logging

logging.debug("Debug message")

Changing my file name to logtest.py fixed the problem.