Today, constants in Python are mostly a matter of convention. Using a name that’s in all-caps and snake case — e.g., DO_NOT_RESTART — is a hint that the variable is intended to be a constant.

Some programming languages, such as Python, do not support constants. Constants are used for values that are unlikely to change, for example: Pi - PI ← 3.142 ...

Python 3.14, named after a famous irrational constant, has arrived in preview. Plus new goodness in Cython 3.1, using Python’s structural pattern matching, querying the NanoCube, and more.