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 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.
LogRecord has no methods; it's just a repository for information about the logging event. The only reason it's a class rather than a dictionary is to facilitate extension.
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