自写自用的抖音下载工具，自己用了很久！拿出来给大家

单文件版，就不做安装包了，这样也方便携带，界面简单的写了一下，没啥美感，实用就行

以下是部分源码：

```python
# 输入布局
input_layout = QHBoxLayout()
self.url_input = QLineEdit()
self.url_input.setPlaceholderText("请输入抖音分享链接或视频链接...")
input_layout.addWidget(self.url_input, 1)
self.paste_btn = QPushButton("粘贴")
self.paste_btn.clicked.connect(self.paste_url)
input_layout.addWidget(self.paste_btn)

self.parse_btn = QPushButton("解析")
self.parse_btn.clicked.connect(self.parse_video)
input_layout.addWidget(self.parse_btn)

main_layout.addLayout(input_layout)

# 解析状态
self.parse_status = QLabel("就绪")
self.parse_status.setStyleSheet("color: gray;")
main_layout.addWidget(self.parse_status)

# 批量操作区域
batch_layout = QHBoxLayout()
self.select_all_checkbox = QCheckBox("全选")
self.select_all_checkbox.stateChanged.connect(self.toggle_select_all)
batch_layout.addWidget(self.select_all_checkbox)

self.set_download_dir_btn = QPushButton("设置保存路径")
self.set_download_dir_btn.clicked.connect(self.set_download_dir)
batch_layout.addWidget(self.set_download_dir_btn)

self.open_download_dir_btn = QPushButton("打开保存文件夹")
self.open_download_dir_btn.clicked.connect(self.open_download_dir)
batch_layout.addWidget(self.open_download_dir_btn)

self.batch_download_btn = QPushButton("下载选中视频")
self.batch_download_btn.clicked.connect(self.batch_download)
batch_layout.addWidget(self.batch_download_btn)

self.delete_selected_btn = QPushButton("删除选中视频")
self.delete_selected_btn.clicked.connect(self.delete_selected)
batch_layout.addWidget(self.delete_selected_btn)

self.clear_history_btn = QPushButton("清空所有记录")
self.clear_history_btn.clicked.connect(self.clear_history)
batch_layout.addWidget(self.clear_history_btn)
```