Protocols are informal interfaces in Python from "summary" of Fluent Python by Luciano Ramalho
Protocols are informal interfaces in Python, a term that is often used in the Python community to refer to interfaces that are not defined in code but rather are based on documentation and conventions. Essentially, a protocol is a set of methods or attributes that a class must implement in order to be considered a member of a particular category.
For example, the protocol for a sequence type in Python includes methods like `__len__`, `__getitem__`, and `__contains__`. If a class implements these methods, it can be used in any context that expects a sequence, even if it does not inherit from a specific base class.
One of the key benefits of protocols is that th...
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