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Logging package for Python. Based on PEP 282 and comments thereto in
comp.lang.python.

Copyright (C) 2001-2014 Vinay Sajip. All Rights Reserved.

To use, simply 'import logging' and log away!
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    Return the textual representation of logging level 'level'.

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    Acquire the module-level lock for serializing access to shared data.

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    A LogRecord instance represents an event being logged.

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    main information passed in is in msg and args, which are combined
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        Return the message for this LogRecord.

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    Make a LogRecord whose attributes are defined by the specified dictionary,
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    Formatter instances are used to convert a LogRecord to text.

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    allows a formatting string to be specified. If none is supplied, the
    default value of "%s(message)\n" is used.

    The Formatter can be initialized with a format string which makes use of
    knowledge of the LogRecord attributes - e.g. the default value mentioned
    above makes use of the fact that the user's message and arguments are pre-
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    attributes in a LogRecord are described by:

    %(name)s            Name of the logger (logging channel)
    %(levelno)s         Numeric logging level for the message (DEBUG, INFO,
                        WARNING, ERROR, CRITICAL)
    %(levelname)s       Text logging level for the message ("DEBUG", "INFO",
                        "WARNING", "ERROR", "CRITICAL")
    %(pathname)s        Full pathname of the source file where the logging
                        call was issued (if available)
    %(filename)s        Filename portion of pathname
    %(module)s          Module (name portion of filename)
    %(lineno)d          Source line number where the logging call was issued
                        (if available)
    %(funcName)s        Function name
    %(created)f         Time when the LogRecord was created (time.time()
                        return value)
    %(asctime)s         Textual time when the LogRecord was created
    %(msecs)d           Millisecond portion of the creation time
    %(relativeCreated)d Time in milliseconds when the LogRecord was created,
                        relative to the time the logging module was loaded
                        (typically at application startup time)
    %(thread)d          Thread ID (if available)
    %(threadName)s      Thread name (if available)
    %(process)d         Process ID (if available)
    %(message)s         The result of record.getMessage(), computed just as
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        Initialize the formatter with specified format strings.

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        basic behaviour is as follows: if datefmt (a string) is specified,
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        record. Otherwise, the ISO8601 format is used. The resulting
        string is returned. This function uses a user-configurable function
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        Format and return the specified exception information as a string.

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        Format the specified record as text.

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        using LogRecord.getMessage(). If the formatting string uses the
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    A formatter suitable for formatting a number of records.
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    Filter instances are used to perform arbitrary filtering of LogRecords.

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        Initialize a filter.

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        Determine if the specified record is to be logged.

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    Handler instances dispatch logging events to specific destinations.

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        Emit a record.

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