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Let’s begin with some definitions:
expression is a construct that produces (returns) a value.literal is a notation for representing a fixed value.I could assume the literal is a expression that returns exactly one value. E.g. the literal 1 is an expression that returns the value 1.
Is there anything wrong in my approach or does being a literal always imply being an expression?
Thank you for clarification.
If you account for language-specific exceptions (Python docstrings, C macros, etc.), you are correct. In general, every literal is an expression.