python中用于监视复制任务的进度条

pip install tqdm

from tqdm import tqdm
import time

def copy_file(source, destination):
    # 模拟复制文件的过程
    with open(source, 'rb') as src_file, open(destination, 'wb') as dest_file:
        total_size = len(src_file.read())
        src_file.seek(0)  # 将文件指针重置到文件开头
        with tqdm(total=total_size, unit='B', unit_scale=True) as pbar:
            while True:
                data = src_file.read(1024)  # 每次读取1024字节数据
                if not data:
                    break
                dest_file.write(data)
                pbar.update(len(data))  # 更新进度条
                time.sleep(0.01)  # 模拟复制过程中的延迟

# 调用copy_file函数进行文件复制
copy_file('source_file.txt', 'destination_file.txt')