Python : real time heart signal transmitting by Bluetooth from wrist sensor to Windows computer and process

real time heart signal transmitting from wrist sensor to Windows computer and process in real time meaning: immediately simple processing and show on Windows desktop screen by Python code? so mostly how to get data from Bluetooth receiver to python in real time and understanding mobile heart signal sensors for example use like this sensor [login to view URL] or https://www.amazon.com/Fitness-Tracker-Blood-Pressure-Monitor/dp/B07R8XTJ1K/ref=pd_sbs_200_t_0/132-0130339-5426068?_encoding=UTF8&pd_rd_i=B07XVHX8BC&pd_rd_r=fe6a500c-3e3e-44ea-b7e5-f49b8712362f&pd_rd_w=U2JYO&pd_rd_wg=7kYGY&pf_rd_p=5cfcfe89-300f-47d2-b1ad-a4e27203a02a&pf_rd_r=FNN9556STECP9P6QZG3N&psc=1&refRID=FNN9556STECP9P6QZG3N so easy to get existing sensor I need small sensor connected to Bluetooth transmit signal to Bluetooth of computer and then python reads in real time data from Bluetooth like [login to view URL] not finger sensor or strap sensor but : wrist sensor , better already existing wrist watch device