def download(book_file, chapter_rename, page_text): chapter_path = os.path.join(book_file, chapter_rename) with open(chapter_path, "w",encoding="utf8") as f: for line in page_text: f.write(line.strip() + "\n") 用threading写多线程
时间: 2023-06-14 16:03:40 浏览: 56
可以使用Python的`threading`模块来实现多线程下载。具体步骤如下:
1. 导入`threading`模块和其他需要的模块:
```python
import threading
import os
import requests
```
2. 定义`download`函数,该函数接收三个参数:`book_file`表示书籍保存的文件夹路径,`chapter_rename`表示章节重命名后的名字,`page_text`表示章节内容。
```python
def download(book_file, chapter_rename, page_text):
chapter_path = os.path.join(book_file, chapter_rename)
with open(chapter_path, "w", encoding="utf8") as f:
for line in page_text:
f.write(line.strip() + "\n")
```
3. 定义`DownloadThread`类,该类继承自`threading.Thread`类。在`__init__`方法中,定义了`book_file`、`chapter_rename`和`page_text`三个属性。在`run`方法中,调用`download`函数下载章节内容。
```python
class DownloadThread(threading.Thread):
def __init__(self, book_file, chapter_rename, page_text):
super(DownloadThread, self).__init__()
self.book_file = book_file
self.chapter_rename = chapter_rename
self.page_text = page_text
def run(self):
download(self.book_file, self.chapter_rename, self.page_text)
```
4. 在主程序中,创建多个`DownloadThread`实例,并调用`start`方法启动线程。
```python
if __name__ == "__main__":
book_file = "book"
if not os.path.exists(book_file):
os.mkdir(book_file)
# 假设有10个章节需要下载
for i in range(10):
chapter_rename = f"chapter{i}.txt"
page_text = [f"line {j}" for j in range(10)]
thread = DownloadThread(book_file, chapter_rename, page_text)
thread.start()
```
这样,就可以实现多线程下载了。每个线程都会下载一个章节的内容,并保存到指定的文件中。注意,如果需要下载的章节数量很多,可能会因为同时打开太多文件而导致程序崩溃,需要进行适当的优化。