We have been busy working on A Student’s Guide to Python for Physical Modeling this summer. We are preparing an updated edition for Winter of 2018. We wanted to take this opportunity to alert readers to a few items that have changed since the publication of the first edition, back in 2015. Python 3.6 The “latest version” of any software package is a moving target, and putting a version number in print ensures that it will be outdated at some point in the future. In the first edition, we used Python 3.4. The latest stable release of Python is version 3.6, and Python 3.7 is under development. Happily, all of the code samples in the book run with Python 3.6. One change that came with Python 3.5 may be of interest to scientific programmers. Python introduced a new operator for matrix multiplication: the “ @ ” symbol. NumPy recognizes this operator, and it can be used as shorthand for the np.dot() function. This may allow you to write simpler, more intuitive code, which usually lead