pyqt5制作一个压缩包下载器

好的，以下是一个简单的PyQt5压缩包下载器的示例代码：

import os
import sys
import urllib.request
import zipfile
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QMessageBox, QProgressBar, QFileDialog

class Downloader(QWidget):
    def __init__(self):
        super().__init__()

        self.initUI()

    def initUI(self):
        # 设置窗口标题和大小
        self.setWindowTitle('压缩包下载器')
        self.resize(400, 200)

        # 创建标签、行编辑框、按钮和进度条控件
        self.url_label = QLabel('下载链接：', self)
        self.url_label.move(20, 20)

        self.url_edit = QLineEdit(self)
        self.url_edit.move(100, 20)
        self.url_edit.resize(280, 20)

        self.save_label = QLabel('保存路径：', self)
        self.save_label.move(20, 50)

        self.save_edit = QLineEdit(self)
        self.save_edit.move(100, 50)
        self.save_edit.resize(200, 20)

        self.select_button = QPushButton('选择', self)
        self.select_button.move(310, 50)
        self.select_button.clicked.connect(self.select_folder)

        self.download_button = QPushButton('下载', self)
        self.download_button.move(20, 90)
        self.download_button.clicked.connect(self.download)

        self.progress_bar = QProgressBar(self)
        self.progress_bar.move(20, 130)
        self.progress_bar.resize(360, 20)

        self.show()

    def select_folder(self):
        # 弹出文件对话框，让用户选择保存路径
        folder_path = QFileDialog.getExistingDirectory(self, '选择保存路径')
        if folder_path:
            self.save_edit.setText(folder_path)

    def download(self):
        url = self.url_edit.text()
        save_path = self.save_edit.text()

        if not url or not save_path:
            QMessageBox.warning(self, '警告', '下载链接或保存路径不能为空！')
            return

        # 显示进度条控件
        self.progress_bar.setValue(0)
        self.progress_bar.show()

        # 下载文件并显示进度
        with urllib.request.urlopen(url) as response, open(os.path.join(save_path, os.path.basename(url)), 'wb') as out_file:
            data = response.read()
            total_size = len(data)
            block_size = 8192
            written_size = 0
            while True:
                buffer = response.read(block_size)
                if not buffer:
                    break
                written_size += len(buffer)
                out_file.write(buffer)
                progress = int(written_size / total_size * 100)
                self.progress_bar.setValue(progress)
                QApplication.processEvents()

        # 如果下载的是zip文件，解压缩并删除zip文件
        if url.endswith('.zip'):
            with zipfile.ZipFile(os.path.join(save_path, os.path.basename(url)), 'r') as zip_file:
                zip_file.extractall(save_path)
            os.remove(os.path.join(save_path, os.path.basename(url)))

        QMessageBox.information(self, '提示', '下载完成！')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    downloader = Downloader()
    sys.exit(app.exec_())

这个程序界面比较简单，只有一个输入框和一个按钮。用户可以在输入框中输入要下载的文件的URL，然后点击按钮开始下载。当下载进度发生变化时，程序会自动更新进度条控件。如果下载的是zip文件，程序会自动解压缩并删除zip文件。