Due to my work experience in geospatial applications development, last year I was selected as reviewer for a good introductory book on the topic, and that was a honor to me.
The book is:
written by Pablo Carrera and e-printed/printed by Packt Publishing.
I highly recommend this book if you're new to geospatial data processing, GIS, map-oriented applications and things like and you want to learn more about it and use Python in all its glory as the de-facto king language in this sector.
The books is practice-oriented and contains lots of examples - and maps :)