Meaning
Assigns the sum of numbers to a variable named total with type annotation int.
Primary Function
Variable assignment with type annotation
Communicative Purpose
Declare and initialize a variable holding the sum of a collection.
Pattern
total: int = sum(numbers)
Core Structure
variable: type = function_call(iterable)
Função primária
Variable assignment with type annotation
Propósito comunicativo
Declare and initialize a variable holding the sum of a collection.
Situações de gatilho
When you need to compute the sum of a collection and store it in a typed variable.
Contextos
Inside a function or method where you need to compute a total.
Padrão
total: int = sum(numbers)
Estrutura central
variable: type = function_call(iterable)
Slots de substituição
total -> variable name; int -> type annotation; numbers -> iterable variable
Colocados típicos
- sum
- len
- list
- iterable
Substituições comuns
- total: float = sum(numbers)
- count: int = len(items)
Erros comuns
Forgetting that sum works only on numeric iterables; mismatched type annotation; forgetting to import sum (not needed as built-in).
Similar / contraste
total: int = reduce(lambda x, y: x + y, numbers); total: float = sum(map(float, numbers))
Interferências
Confusing sum with reduce or accumulate; assuming sum works on non-numeric types.
Família do chunk
- variable assignment
- type annotation
- sum aggregation
Nuance
The type annotation is optional but aids static type checkers; sum returns an int for integer iterables.
Efeito pragmático
Communicates the intent to compute a total and enforces type safety.
Dica de memória
total sum
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