from logging import getLogger
from logging.config import fileConfig
try:
    from StringIO import StringIO
except ImportError:
    from io import StringIO

# create the loggers before config.
getLogger("foo")
getLogger("foo.child")
getLogger("bar")
getLogger("bar.child")
# The logger below existing causes bar.child to be disabled.
# Comment the line below out for things to work as expected.
getLogger("bar-etc")

config_file = StringIO("""
[loggers]
keys = root, foo, bar

[handlers]
keys = console

[formatters]
keys = 

[logger_root]
level = DEBUG
handlers = console

[logger_foo]
level = DEBUG
handlers =
qualname = foo

[logger_bar]
level = DEBUG
handlers =
qualname = bar

[handler_console]
class = StreamHandler
args = (sys.stderr,)
level = NOTSET
""")

fileConfig(config_file)

# now write to the loggers - foo.child works, bar.child does not due
# to "bar-etc" existing.
getLogger("foo").warn("foo warning")
getLogger("foo.child").warn("foo.child warning")
getLogger("bar").warn("bar warning")
getLogger("bar.child").warn("bar.child warning")
getLogger("bar-etc").warn("bar-etc warning")