I am working with PyCharm 4.04. Since I installed it, every time I open it, as default directory I get this:
C:\\Users\\Laura\\AppData\\Local\\Temp\\main.
I finally solved the problem.
I think it all started because the first project that I opened with pycharm was in my "download" folder, so the working directory was automatically set to a temporal folder by default and allthough I moved the project to another folder and I manually changed the working directory from the terminal, it was not working.
The solution was creating a new project and giving a correct path to the new project. It seems very easy but it was not that obvious.