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How do I control the field of a custom doctyp

how do I control the field of a custom doctype
like generate a py file to control it

Welcome in community,
you can use customize form to edit or add new doctype

or custom script to control doctype field and event

thanks @OmarJaber after making a customize doctype it will be saved on my app at custom folder and now is it possible to make a to do something for the customize doctype?

python and js file will generate automatically

sure if we create a new doctype, what abaout we create a custom doctype?