Programming languages all come with ... as you’ll see later on. Any mutable Python object doesn’t have a consistent hash value over its lifetime, and so can’t be used as a key.

"Hash tables are a commonly used data structure in most programming languages," they ... vendors and developer groups such as PHP, Oracle, Python, Ruby, Google, and Microsoft.

Ideally, the lock file lists each dependency, where to find it, a hash to verify it, and any other information someone might need to recreate the dependency set. Python projects typically don’t ...