Web Reference: I have a function which validates its argument to accept only values from a given list of valid options. Typing-wise, I reflect this behavior using a Literal type alias, like so: from typing import Literals are parameterized with one or more values. When a Literal is parameterized with more than one value, it’s treated as exactly equivalent to the union of those types. That is, Literal[v1, v2, v3] is equivalent to Literal[v1] | Literal[v2] | Literal[v3]. Literals are representations of fixed values in a program. They can be numbers, characters, or strings, etc. For example, 'Hello, World!', 12, 23.0, 'C', etc. Literals are often used to assign values to variables or constants. For example, In the above expression, site_name is a variable, and 'programiz.com'is a literal. There are different types o...
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