$ cat x.py 
# coding=utf-8
import logging
logging.basicConfig(format='%(name)s %(message)s')
logger = logging.getLogger(u'测试')
logger.error(u'测试')

$ python2.7 x.py 
Traceback (most recent call last):
  File "/usr/lib64/python2.7/logging/__init__.py", line 859, in emit
    msg = self.format(record)
  File "/usr/lib64/python2.7/logging/__init__.py", line 732, in format
    return fmt.format(record)
  File "/usr/lib64/python2.7/logging/__init__.py", line 474, in format
    s = self._fmt % record.__dict__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 0: ordinal not in range(128)
Logged from file x.py, line 8