How to enter data onto a website page field with selenium without opening the browser explicitly everytime the python code runs [closed]

I want to paste text to an existing page, is there any way to do this with Python? I don't want to open new browser tab.

Edit: I want to open some url and enter the data into some fields using selenium. But i dont want to open the browser when i run the code. So basically the browser should be opened in background. Is there a way to do this?