An annotation can be any valid Python expression. Here’s an example of an annotated function where we’ve gone bananas with useless information. # Without annotation def foo(bar, baz ...

Today the release of Python 3.3.0 was made official, with a couple new syntax features, a handful of library modules, and several other improvements. According to Python.org’s site, the next ...

I recently switched to using python 2.5 from 2.4, one of the new language level features in 2.5 is conditional expressions. Which I thought was odd because I was already writing conditional ...

Python has added a number of powerful new ... my_val = func_result() if my_val == 1: do_something_else() The assignment expression syntax, or “walrus operator” as it is also known, lets ...

One is to write an if/elif/else chain of expressions ... in Python. You cannot match against variable contents through indexing. For instance, case commands[0]: would be rejected as a syntax ...

Executing Code from a File Now let's take a look at a slightly more useful example to see how Python can be embedded into a real program. If you take a look at Listing 4, you'll see a small program ...