Showing content from http://svn.python.org/projects/python/branches/test_subprocess_10826/Lib/distutils/log.py below:
"""A simple log mechanism styled after PEP 282.""" # 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 not in (DEBUG, INFO, WARN, ERROR, FATAL): raise ValueError('%s wrong log level' % str(level)) if level >= self.threshold: if args: msg = msg % args if level in (WARN, ERROR, FATAL): stream = sys.stderr else: stream = sys.stdout if stream.errors == 'strict': # emulate backslashreplace error handler encoding = stream.encoding msg = msg.encode(encoding, "backslashreplace").decode(encoding) stream.write('%s\n' % msg) stream.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)
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