F - Glossary (Python)

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function family

• is a general term for function, method, generator and lambda.

  • function

  • is a statement which can do a specific task, reusing and reducing code and whose type is func.
  • creates a function object which can be called and used:
    • A function object is already created by a function itself so that we can recall and reuse the existing function object multiple times without creating a new one so a function object is always one for one function.
  • must have a def, identifier, (): and its body code.
  • can have zero or more parameters and return statements.
  • can have one or more pass statements, return statements and values to do nothing, returning None.
  • can be assigned a variable, function and class to.
  • can be defined a variable, function and class in.
  • can be written in one line.
  • can be indirectly assigned to a variable and parameter but not directly.
  • and parameter name can have letters, _, the digits except for the 1st character and can be a reserved soft keyword but cannot start with a digit and cannot be a reserved keyword and should be lower_snake_case.

  • function definition

  • is a guide to how to write a function.

  • function header
    

  • is the beginning code of function family members until and including ":":
    • E.g. async def func(x: int=100, y:float=3.14) -> None:.

  • function signature
    

  • is a function header excluding async, def, lambda, its name and ":":
    • E.g. (x: int=100, y:float=3.14) -> None.
  • can be got by inspect.signature.