May 20, 2025 · May 20, 2025 · May 20, 2025
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
 from types import GenericAlias
 from string import Template
 from string import Formatter as StrFormatter
 from string.templatelib import Template as TStringTemplate, Interpolation


 __all__ = ['BASIC_FORMAT', 'BufferingFormatter', 'CRITICAL', 'DEBUG', 'ERROR',

    LogRecord instances are created every time something is logged. They
    contain all the information pertinent to the event being logged. The
    main information passed in is in msg and args, which are combined
    using str(msg) % args to create the message field of the record. The
    record also includes information such as when the record was created,
    the source line where the logging call was made, and any exception
    information to be logged.
    main information passed in is in msg and args. These are combined
    using str(msg) % args to create the message field of the record. A
    special case here is that if the msg is a t-string, it will be
    formatted as if it was an f-string without using the provided args.

    The record also includes information such as when the record was
    created, the source line where the logging call was made, and any
    exception information to be logged.
    """
    def __init__(self, name, level, pathname, lineno,
                 msg, args, exc_info, func=None, sinfo=None, **kwargs):
        ct = time.time_ns()
        self.name = name
        self.msg = msg
        #

        # When logging a t-string, pull the values out of it and prepend
        # them to any provided args
        if isinstance(msg, TStringTemplate):
            args = (
                {x.expression: x.value for x in msg if isinstance(x, Interpolation)},
                *args
            )
        # The following statement allows passing of a dictionary as a sole
        # argument, so that you can do something like
        #  logging.debug("a %(a)d b %(b)s", {'a':1, 'b':2})

        Return the message for this LogRecord after merging any user-supplied
        arguments with the message.
        """
        If the messsage is a t-string object it will be formatted in the same
        way as an f-string without any extra user-supplied arguments.
        """
        if isinstance(self.msg, TStringTemplate):
            return "".join(
                (
                    _str_formatter.format_field(
                        _str_formatter.convert_field(x.value, x.conversion),
                        x.format_spec
                    )
                ) if isinstance(x, Interpolation)
                else x
                for x in self.msg
            )

        msg = str(self.msg)
        if self.args:
            msg = msg % self.args
Original file line number	Diff line number	Diff line change
Expand Up		@@ -28,6 +28,7 @@
		from types import GenericAlias
		from string import Template
		from string import Formatter as StrFormatter
		from string.templatelib import Template as TStringTemplate, Interpolation


		__all__ = ['BASIC_FORMAT', 'BufferingFormatter', 'CRITICAL', 'DEBUG', 'ERROR',
Expand DownExpand Up		@@ -289,11 +290,14 @@ class LogRecord(object):

		LogRecord instances are created every time something is logged. They
		contain all the information pertinent to the event being logged. The
		main information passed in is in msg and args, which are combined
		using str(msg) % args to create the message field of the record. The
		record also includes information such as when the record was created,
		the source line where the logging call was made, and any exception
		information to be logged.
		main information passed in is in msg and args. These are combined
		using str(msg) % args to create the message field of the record. A
		special case here is that if the msg is a t-string, it will be
		formatted as if it was an f-string without using the provided args.

		The record also includes information such as when the record was
		created, the source line where the logging call was made, and any
		exception information to be logged.
		"""
		def __init__(self, name, level, pathname, lineno,
		msg, args, exc_info, func=None, sinfo=None, **kwargs):
Expand All		@@ -303,7 +307,14 @@ def __init__(self, name, level, pathname, lineno,
		ct = time.time_ns()
		self.name = name
		self.msg = msg
		#

		# When logging a t-string, pull the values out of it and prepend
		# them to any provided args
		if isinstance(msg, TStringTemplate):
		args = (
		{x.expression: x.value for x in msg if isinstance(x, Interpolation)},
		*args
		)
		# The following statement allows passing of a dictionary as a sole
		# argument, so that you can do something like
		# logging.debug("a %(a)d b %(b)s", {'a':1, 'b':2})
Expand DownExpand Up		@@ -394,7 +405,21 @@ def getMessage(self):

		Return the message for this LogRecord after merging any user-supplied
		arguments with the message.
		"""
		If the messsage is a t-string object it will be formatted in the same
		way as an f-string without any extra user-supplied arguments.
		"""
		if isinstance(self.msg, TStringTemplate):
		return "".join(
		(
		_str_formatter.format_field(
		_str_formatter.convert_field(x.value, x.conversion),
		x.format_spec
		)
		) if isinstance(x, Interpolation)
		else x
		for x in self.msg
		)

		msg = str(self.msg)
		if self.args:
		msg = msg % self.args
Expand Down