Sets and Dicts in Python: Understanding __ror__ and __ior__ Methods

Explanation:

The __ror__ method, which stands for "right-hand side OR", is not implemented by the set and dict types in Python because the OR operator (|) is defined only to work with sets and not with dictionaries. Therefore, these types do not natively support the operation in a way where the set or dict would be on the right-hand side of the OR operation.

The __ior__ method stands for "in-place OR" and is implemented by sets, represented by the |= operator. This method allows the modification of a set to include elements from another set. However, for dicts, the |= operator and thus the __ior__ method were introduced in Python 3.9 to enable merging dictionaries in-place, appending the key-value pairs from one dictionary to another. Prior to Python 3.9, this functionality was not available for dictionaries.