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- """A simple log mechanism styled after PEP 282."""
-
- # This module should be kept compatible with Python 2.1.
-
- # The class here is styled after PEP 282 so that it could later be
- # replaced with a standard Python logging implementation.
-
- DEBUG = 1
- INFO = 2
- WARN = 3
- ERROR = 4
- FATAL = 5
-
- import sys
-
- class Log:
-
- def __init__(self, threshold=WARN):
- self.threshold = threshold
-
- def _log(self, level, msg, args):
- if level >= self.threshold:
- if not args:
- # msg may contain a '%'. If args is empty,
- # don't even try to string-format
- print msg
- else:
- print msg % args
- sys.stdout.flush()
-
- def log(self, level, msg, *args):
- self._log(level, msg, args)
-
- def debug(self, msg, *args):
- self._log(DEBUG, msg, args)
-
- def info(self, msg, *args):
- self._log(INFO, msg, args)
-
- def warn(self, msg, *args):
- self._log(WARN, msg, args)
-
- def error(self, msg, *args):
- self._log(ERROR, msg, args)
-
- def fatal(self, msg, *args):
- self._log(FATAL, msg, args)
-
- _global_log = Log()
- log = _global_log.log
- debug = _global_log.debug
- info = _global_log.info
- warn = _global_log.warn
- error = _global_log.error
- fatal = _global_log.fatal
-
- def set_threshold(level):
- # return the old threshold for use from tests
- old = _global_log.threshold
- _global_log.threshold = level
- return old
-
- def set_verbosity(v):
- if v <= 0:
- set_threshold(WARN)
- elif v == 1:
- set_threshold(INFO)
- elif v >= 2:
- set_threshold(DEBUG)
-