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alanbriolat/logging_format_bug.py

Created April 7, 2014 16:52
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logging_format_bug.py
import logging
logging.basicConfig(level=logging.DEBUG)
class Foo(object):
def __init__(self):
self.bar = "hello"
def __getitem__(self, key):
return getattr(self, key)
f = Foo()
# Outputs "DEBUG:root:hello"
logging.debug("%(bar)s" % f)
# Raises "TypeErorr: format requires a mapping"
logging.debug("%(bar)s", f)
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