推送重试逻辑以下载列表中的文件

import time
import random

def download_file(url):
    max_retries = 5
    retry_interval = 1  # 初始重试间隔为1秒

    for attempt in range(max_retries):
        try:
            # 模拟文件下载过程
            if random.random() < 0.8:  # 模拟80%的成功率
                print(f"文件下载成功: {url}")
                return True
            else:
                raise Exception("下载失败")
        except Exception as e:
            if attempt < max_retries - 1:
                print(f"下载失败，第 {attempt + 1} 次重试，等待 {retry_interval} 秒后重试")
                time.sleep(retry_interval)
                retry_interval *= 2  # 指数退避
            else:
                print(f"下载失败，已达到最大重试次数")
                return False

download_file("http://example.com/file.zip")

import os
import time

def download_file(url, file_path):
    max_retries = 5
    retry_interval = 1  # 初始重试间隔为1秒

    for attempt in range(max_retries):
        if os.path.exists(file_path):
            print(f"文件已存在: {file_path}")
            return True

        try:
            # 模拟文件下载过程
            if random.random() < 0.8:  # 模拟80%的成功率
                print(f"文件下载成功: {url}")
                with open(file_path, 'w') as f:
                    f.write("模拟文件内容")
                return True
            else:
                raise Exception("下载失败")
        except Exception as e:
            if attempt < max_retries - 1:
                print(f"下载失败，第 {attempt + 1} 次重试，等待 {retry_interval} 秒后重试")
                time.sleep(retry_interval)
                retry_interval *= 2  # 指数退避
            else:
                print(f"下载失败，已达到最大重试次数")
                return False

download_file("http://example.com/file.zip", "file.zip")