switch/case was, and still is, considered unnecessary in Python because it can be expressed just as clearly and concisely using if/elif/else. There was discussion about adding it, long ago, but (IIRC) Guido decided against it. It is not obvious what syntax switch/case should have in Python (two levels of indentation?), and its benefits are marginal at best.

Then again, many things that supposedly would "never" make it into the language, have been added over time anyway, including the ternary if. So who knows...