• REPL --> Read-Eval-Print-Loop

    • Read --> Turns input into a useful data structure
    • Literal(1)
    • Name('x')

  • the types of expressions in PyCombinator --> literal, name, call expression, lambda expression

  • the types of values in PyCombinator --> number, lambda function, primitive function

  • A lambda function is the result of evaluating a lambda expression

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