Loop bounds must be constant: Vyper compiler static analysis

Vyper enforces strict bounded loops to ensure predictable gas costs and prevent denial-of-service attacks. This requirement is handled by the compiler's static analysis component, which mandates that the upper bound of any for loop be a constant value known at compile-time.

When implementing logic that requires iterating over a dynamic data structure, such as a list whose length is determined by a state variable or a function argument, the compiler prevents the use of these dynamic values as loop limits.

Given these constraints, what is the most gas-efficient pattern for iterating over a dynamic list while adhering to a constant upper bound? How should the contract handle cases where the actual list length is significantly smaller than the defined constant limit to avoid unnecessary iterations?