chunk_file.write(chunk)
时间: 2024-01-15 07:05:30 浏览: 28
The line `chunk_file.write(chunk)` is used to write the contents of the `chunk` variable to the file `chunk_file`. The `write()` method is used to write data to a file object. In this case, it is writing the contents of the `chunk` to the file opened in binary mode.
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相关问题
import requests def download_video(url, filename): response = requests.get(url, stream=True) response.raise_for_status() with open(filename, 'wb') as file: for chunk in response.iter_content(chunk_size=8192): if chunk: file.write(chunk)
您好!对于您的第一个问题,我可以看出您想要下载视频。为了下载视频,您可以使用Python中的`requests`库来发送HTTP请求并获取视频内容。以下是一个示例函数`download_video`,该函数接受视频的URL和要保存的文件名作为参数,并将视频内容写入指定的文件中:
```python
import requests
def download_video(url, filename):
response = requests.get(url, stream=True)
response.raise_for_status()
with open(filename, 'wb') as file:
for chunk in response.iter_content(chunk_size=8192):
if chunk:
file.write(chunk)
```
您可以通过调用`download_video`函数并传入视频的URL和要保存的文件名来下载视频。请注意,这个函数使用了流式传输(stream=True),这对于大型文件非常有用,因为它允许您逐块下载并保存文件,而不会一次性加载整个文件到内存中。
希望这个函数能帮到您!如果您有任何其他问题,请随时提问。
offset = 0 for chunk in f.iter_content(chunk_size=self.buffer): # 依次读取整个包 if not chunk: break self.fileobj.seek(offset) self.fileobj.write(chunk) offset = offset + len(chunk) proess = offset / int(self.filesize) * 100 # logger.info("写入块:{},{}".format(offset,proess)) self.download_proess_signal.emit(int(proess))这段代码如何理解
这段代码是用来读取文件的内容。其中,offset表示文件的偏移量,初始值为0。iter_content是一个迭代器,每次返回指定大小的文件内容块(chunk),大小由buffer参数指定。通过循环迭代,可以逐步读取整个文件的内容。