I cannot forget to signal an important page, full of interesting and well described links to libraries, notes, documents concerning the varied world of Python, aimed to Hydrology and to hydrologists. Probably I would not dare to say so openly what page’s author adfirms:
I am actually impressed by the quality of the contributions in Python. I think there is not anymore reason to use commercial program like Matlab in Universities. What Matlab does, also Python does.
but it describes exactly what I think