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76 lines
2.1 KiB
Python
76 lines
2.1 KiB
Python
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"""Top-level module for Flake8.
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This module
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- initializes logging for the command-line tool
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- tracks the version of the package
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- provides a way to configure logging for the command-line tool
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.. autofunction:: flake8.configure_logging
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"""
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import logging
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import sys
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LOG = logging.getLogger(__name__)
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LOG.addHandler(logging.NullHandler())
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__version__ = "3.7.7"
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__version_info__ = tuple(
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int(i) for i in __version__.split(".") if i.isdigit()
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)
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# There is nothing lower than logging.DEBUG (10) in the logging library,
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# but we want an extra level to avoid being too verbose when using -vv.
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_EXTRA_VERBOSE = 5
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logging.addLevelName(_EXTRA_VERBOSE, "VERBOSE")
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_VERBOSITY_TO_LOG_LEVEL = {
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# output more than warnings but not debugging info
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1: logging.INFO, # INFO is a numerical level of 20
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# output debugging information
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2: logging.DEBUG, # DEBUG is a numerical level of 10
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# output extra verbose debugging information
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3: _EXTRA_VERBOSE,
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}
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LOG_FORMAT = (
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"%(name)-25s %(processName)-11s %(relativeCreated)6d "
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"%(levelname)-8s %(message)s"
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)
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def configure_logging(verbosity, filename=None, logformat=LOG_FORMAT):
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"""Configure logging for flake8.
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:param int verbosity:
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How verbose to be in logging information.
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:param str filename:
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Name of the file to append log information to.
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If ``None`` this will log to ``sys.stderr``.
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If the name is "stdout" or "stderr" this will log to the appropriate
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stream.
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"""
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if verbosity <= 0:
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return
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if verbosity > 3:
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verbosity = 3
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log_level = _VERBOSITY_TO_LOG_LEVEL[verbosity]
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if not filename or filename in ("stderr", "stdout"):
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fileobj = getattr(sys, filename or "stderr")
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handler_cls = logging.StreamHandler
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else:
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fileobj = filename
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handler_cls = logging.FileHandler
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handler = handler_cls(fileobj)
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handler.setFormatter(logging.Formatter(logformat))
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LOG.addHandler(handler)
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LOG.setLevel(log_level)
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LOG.debug(
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"Added a %s logging handler to logger root at %s", filename, __name__
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)
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