What is the purpose of documentation?

Question

to store copies of all of the previous versions of the code
to make code more Pythonic
to record how much time it took to develop the code
to explain what the code does

Answer 1

The primary purpose of documentation is to explain what the code does. It provides an in-depth understanding of the code's functionality, usage, and implementation details. Documentation helps other developers or users to utilize and interact with the code effectively. It can include explanations of design choices, algorithms, data structures, configuration options, code examples, and more. Documentation also serves as a reference for future maintenance or updates.