The fastest way to access indexes of list within loop in Python 3.7 is to use the enumerate method for small, medium and huge lists. Please see different approaches which can be used to iterate over list and access index value and their performance metrics (which I suppose would be useful for you) in code samples below: 2 Numpy can also be used to get the ascii value of a character. It is particularly useful if you need to convert a lot of characters to their ascii/unicode codepoints.

Understanding the Context

Depending on the number of characters, it could be orders of magnitude faster than calling ord in a loop. First and foremost, the "pass by value vs. pass by reference" distinction as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used now. 1 Newer languages2 tend to use a different (but similar) pair of techniques to achieve the same effects (see below) which is the primary source of confusion.

Key Insights

A ... Java Spring: How to use `@Value` annotation to inject an `Environment ...