extra can not hava keys like name about python-json-logger

[NewSouthMjos]

As you said,

the name key has been set as myname as the logger name.

and it is ok behavior.
I think the following names are reserved:

args
asctime
created
exc_info
filename
funcName
levelname
levelno
lineno
message
module
msecs
msg
name
pathname
process
processName
relativeCreated
stack_info
thread
threadName

https://docs.python.org/3/library/logging.html#logrecord-attributes

So, just pick another name for your extra!

[thenumberouscode]

emmm, I think it's inconvenient for users to use json formatter when there are so many reserve fields. As a formatter, it should format everything that user inputs.