I was also unable to access external libraries on VS Code. What I did was first to install pylint extension.
Although it still doesn't show the way PyCharm does but now, when I start typing out the name of a module it brings out a pop-up list of all the modules starting with that letter and if i import a specifiied module, highlight it and click Go to, F12, it takes me to the source code in the python library (e.g import Random) then I highlight Random click F12 I'm taken to the source code for the Random module in the Lib package.
