If I'm using an image and I want to know the image's size in the file.
There is a function to get the picture's height and width ?
EDIT: Of course I loaded the image to the program with pygame.image.load(PATH).
I believe you need to load the image as a Surface before you can get its width and height. You do that with foo = pygame.image.load(PATHNAME).
Then you can get the width and height by creating a Rectangle with foo.get_rect() and asking the rectangle.
How to get the picture size in pygame (python)