How can I implement the token bucket algorithm in Python?

How can I implement the token bucket algorithm in Python?

To implement the token bucket algorithm, you can start by defining a class that manages tokens and the bucket's capacity.

What methods should I include in this class?

You should include methods for adding tokens, consuming tokens, and checking the current token count.

Can you provide a sample code snippet?

Sure! Here's a simple implementation:

import time

class TokenBucket:
    def __init__(self, capacity, refill_rate):
        self.capacity = capacity
        self.tokens = capacity
        self.refill_rate = refill_rate
        self.last_refill = time.time()

    def add_tokens(self):
        now = time.time()
        elapsed = now - self.last_refill
        new_tokens = elapsed * self.refill_rate
        self.tokens = min(self.capacity, self.tokens + new_tokens)
        self.last_refill = now

    def consume(self, tokens):
        self.add_tokens()
        if tokens <= self.tokens:
            self.tokens -= tokens
            return True
        return False

How do I test this implementation?

You can create a simple test function that simulates token consumption and checks the remaining tokens after each operation.