OLife'S
for i in range(10):
Iteration Patterns

Meaning

Iterates over a sequence of integers from 0 to 9 inclusive, executing the loop body once for each value.

Primary Function

Iterate over a range of numbers to repeat a block of code a known number of times.

Communicative Purpose

To repeat a block of code a fixed number of times, typically for counting or indexed iteration.

Pattern

for <variable> in range(<stop>):

Core Structure

for <variable> in range(<stop>):

Função primária

Iterate over a range of numbers to repeat a block of code a known number of times.

Propósito comunicativo

To repeat a block of code a fixed number of times, typically for counting or indexed iteration.

Situações de gatilho

When you need to execute a block of code a known number of times, iterate over a sequence of indices, or perform counting loops.

Contextos

Used in Python scripts for counting loops, iterating over indices, generating sequences, and any situation requiring a fixed-number repeat.

Padrão

for <variable> in range(<stop>):

Estrutura central

for <variable> in range(<stop>):

Slots de substituição

<variable>: any valid identifier; <stop>: integer expression (literal, variable, or expression) indicating the stop value (exclusive).

Colocados típicos

  • range
  • in
  • :
  • indented block
  • i
  • j
  • k
  • idx
  • len
  • list
  • enumerate

Substituições comuns

  • <variable> can be any identifier
  • <stop> can be an integer literal
  • variable
  • or expression like len(seq)
  • range can also accept start
  • stop
  • and step arguments.

Erros comuns

off-by-one errors (using range(n) expecting 1..n), forgetting the colon, incorrect indentation, using float arguments with range, misunderstanding the default start of 0.

Similar / contraste

while loop (condition-based), for ... in list (iterating over items), foreach in other languages, list comprehensions.

Interferências

May confuse range's default start (0) with 1-based indexing; may confuse with while loops; may misuse step argument sign.

Família do chunk

  • iteration constructs

Nuance

range(10) produces the numbers 0 through 9; it is a lazy, memory‑efficient sequence; the loop variable remains accessible inside the block.

Efeito pragmático

Signals a definite, known‑number repetition, often used for counting or indexed processing.

Dica de memória

Think ‘for i in range(10):’ as a cue to repeat something ten times.

Nota

range objects are immutable sequences that generate values on demand; they are not lists unless explicitly converted with list().

Upgrade path

while loop, enumerate, list comprehension, range with start/stop/step.

Frequência: Very highFormulaicidade: Semi-fixedTipo de construção: loop constructPrioridade de aquisição: Automatic productionPrioridade de output: BothTag de espaçamento: Immediate

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