ahojnnes

This is possible: Right click on Symbol, Goto definition. This can be easily mapped to a keybinding as well.

from skimage.transform import rotate

rotate(image, angle, resize=True)

Also, scikit-image provides a nice interface for geometric transformations: `SimilarityTransform`, `AffineTransform`, `ProjectiveTransform`, `PolynomialTransform`.

For everyone interested in computer vision / image processing in Python, http://scikit-image.org/ in combination with http://scikit-learn.org/ are also worth a look.