How to Track Cache Hit Ratio in Python

import random
import time
from collections import OrderedDict

class LRUCache:
    def __init__(self, capacity: int):
        self.cache = OrderedDict()
        self.capacity = capacity
        self.hits = 0
        self.misses = 0

    def get(self, key):
        if key in self.cache:
            self.hits += 1
            self.cache.move_to_end(key)
            return self.cache[key]
        self.misses += 1
        return -1

    def put(self, key, value):
        if key in self.cache:
            self.cache.move_to_end(key)
        self.cache[key] = value
        if len(self.cache) > self.capacity:
            self.cache.popitem(last=False)

    def hit_ratio(self):
        total = self.hits + self.misses
        return self.hits / total if total > 0 else 0.0

if __name__ == "__main__":
    random.seed(42)
    cache = LRUCache(3)
    keys = list(range(5))

    for _ in range(100):
        op = random.choice(["get", "get", "put"])  # bias toward reads
        key = random.choice(keys)
        if op == "get":
            cache.get(key)
        else:
            cache.put(key, key * 10)

    print(f"Hits: {cache.hits}, Misses: {cache.misses}")
    print(f"Hit ratio: {cache.hit_ratio():.2f}")