---
name: rsi
kind: function
lang: py
domain: finance
version: "1.0.0"
purity: pure
signature: "def rsi(data: list, period: int) -> list"
description: "Calcula el Relative Strength Index (RSI) de una serie de precios."
tags: [finance, rsi, momentum, indicator, python]
uses_functions: []
uses_types: []
returns: []
returns_optional: false
error_type: ""
imports: []
tested: false
tests: []
test_file_path: ""
file_path: "python/functions/finance/finance.py"
---

## Ejemplo

```python
prices = [44, 44.34, 44.09, 43.61, 44.33, 44.83, 45.10, 45.42, 45.84, 46.08,
          45.89, 46.03, 45.61, 46.28, 46.28, 46.00, 46.03, 46.41, 46.22, 45.64]
result = rsi(prices, 14)
# Lista de valores RSI entre 0 y 100
```

## Notas

Usa el metodo de suavizado de Wilder (media exponencial modificada).
Requiere al menos period + 1 datos de entrada. Retorna len(data) - period valores.
RSI = 100 si no hay perdidas en el periodo (avg_loss == 0).