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annotate Lib/distutils/log.py @ 79691:05c8928362ee

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Merge __next__ method link fixes with 3.3.
author Ezio Melotti <ezio.melotti@gmail.com>
date Fri, 12 Oct 2012 13:46:37 +0300
parents 0cafc20e5637
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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dc7d5c2d5845 A simple log mechanism styled after the proposed std library module
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1 """A simple log mechanism styled after PEP 282."""
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2
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3 # The class here is styled after PEP 282 so that it could later be
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4 # replaced with a standard Python logging implementation.
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5
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6 DEBUG = 1
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7 INFO = 2
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8 WARN = 3
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9 ERROR = 4
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10 FATAL = 5
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11
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12 import sys
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13
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14 class Log:
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15
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16 def __init__(self, threshold=WARN):
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17 self.threshold = threshold
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18
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19 def _log(self, level, msg, args):
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20 if level not in (DEBUG, INFO, WARN, ERROR, FATAL):
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21 raise ValueError('%s wrong log level' % str(level))
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22
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23 if level >= self.threshold:
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24 if args:
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25 msg = msg % args
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26 if level in (WARN, ERROR, FATAL):
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27 stream = sys.stderr
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28 else:
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29 stream = sys.stdout
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30 if stream.errors == 'strict':
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31 # emulate backslashreplace error handler
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32 encoding = stream.encoding
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33 msg = msg.encode(encoding, "backslashreplace").decode(encoding)
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34 stream.write('%s\n' % msg)
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35 stream.flush()
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36
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37 def log(self, level, msg, *args):
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38 self._log(level, msg, args)
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39
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40 def debug(self, msg, *args):
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41 self._log(DEBUG, msg, args)
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42
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43 def info(self, msg, *args):
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44 self._log(INFO, msg, args)
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45
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46 def warn(self, msg, *args):
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47 self._log(WARN, msg, args)
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48
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49 def error(self, msg, *args):
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50 self._log(ERROR, msg, args)
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51
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52 def fatal(self, msg, *args):
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53 self._log(FATAL, msg, args)
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54
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55 _global_log = Log()
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56 log = _global_log.log
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57 debug = _global_log.debug
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58 info = _global_log.info
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59 warn = _global_log.warn
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60 error = _global_log.error
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61 fatal = _global_log.fatal
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62
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63 def set_threshold(level):
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64 # return the old threshold for use from tests
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65 old = _global_log.threshold
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66 _global_log.threshold = level
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67 return old
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68
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69 def set_verbosity(v):
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70 if v <= 0:
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71 set_threshold(WARN)
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72 elif v == 1:
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73 set_threshold(INFO)
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74 elif v >= 2:
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75 set_threshold(DEBUG)