File "C:\devApp\Python\Python312\Lib\urllib\request.py", line 1344, in do_open
时间: 2023-12-13 13:05:14 浏览: 295
根据提供的引用内容,可以看出这是Python中的urllib库的一部分。在Python中,urllib库是用于URL处理的标准库之一,它提供了一系列用于操作URL的方法和类。其中,urllib.request模块定义了一些函数和类,用于打开URL地址并读取其内容。在引用中,open()函数被调用,该函数用于打开URL地址并返回一个类文件对象。在引用中,urlopen()函数被调用,该函数用于打开URL地址并返回一个HTTPResponse对象。而在提供的引用中,do_open()函数被调用,该函数是urllib库中的一个私有函数,用于打开URL地址并返回一个类文件对象。具体来说,do_open()函数是在urllib库中的FancyURLopener类中被调用的,该类是urllib库中的一个子类,用于打开URL地址并返回一个类文件对象。
```python
import urllib.request
url = 'http://www.example.com'
response = urllib.request.urlopen(url)
html = response.read()
print(html)
```
相关问题
Traceback (most recent call last): File "D:\Python\pythonProject_pras\004_抓取知乎图片.py", line 27, in <module> urllib.request.urlretrieve(content_list[n], local) File "D:\Python\python39\lib\urllib\request.py", line 239, in urlretrieve with contextlib.closing(urlopen(url, data)) as fp: File "D:\Python\python39\lib\urllib\request.py", line 214, in urlopen return opener.open(url, data, timeout) File "D:\Python\python39\lib\urllib\request.py", line 501, in open req = Request(fullurl, data) File "D:\Python\python39\lib\urllib\request.py", line 320, in __init__ self.full_url = url File "D:\Python\python39\lib\urllib\request.py", line 346, in full_url self._parse() File "D:\Python\python39\lib\urllib\request.py", line 375, in _parse raise ValueError("unknown url type: %r" % self.full_url) ValueError: unknown url type: '" style=' 这个错误该怎么解决
这个错误是由于`content_list`中的某些字符串不是有效的URL引起的。可以尝试使用正则表达式进一步筛选出有效的URL,或者检查`content_list`中的数据是否正确。另外,还要注意确保网络连接正常,以便能够正确访问URL。
以下是一种可能的解决方法,使用正则表达式进行URL筛选:
```python
import re
# ... 其他代码 ...
# 使用正则表达式筛选有效的URL
valid_urls = [url for url in content_list if re.match(r'^https?://', url)]
n = 0
while n < len(valid_urls):
i = time.time()
local = (r"%s.jpg" % (i))
urllib.request.urlretrieve(valid_urls[n], local)
print("编号:" + str(i))
n = n + 1
```
这样可以确保只有以`http://`或`https://`开头的URL才会被保存和下载。
Traceback (most recent call last): File "D:/pythonproject/Auto/forcast/Auto_forcast1.py", line 8, in <module> timeout=30) File "D:\pythonproject\HyperTS\venv\lib\site-packages\taosrest\__init__.py", line 44, in connect return TaosRestConnection(**kwargs) File "D:\pythonproject\HyperTS\venv\lib\site-packages\taosrest\connection.py", line 84, in __init__ timezone=self._timezone, File "D:\pythonproject\HyperTS\venv\lib\site-packages\taosrest\restclient.py", line 74, in __init__ self._taosd_token = self.get_taosd_token() File "D:\pythonproject\HyperTS\venv\lib\site-packages\taosrest\restclient.py", line 101, in get_taosd_token response = urlopen(self._login_url, timeout=self._timeout) File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\urllib\request.py", line 222, in urlopen return opener.open(url, data, timeout) File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\urllib\request.py", line 525, in open response = self._open(req, data) File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\urllib\request.py", line 543, in _open '_open', req) File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\urllib\request.py", line 503, in _call_chain result = func(*args) File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\urllib\request.py", line 1345, in http_open return self.do_open(http.client.HTTPConnection, req) File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\urllib\request.py", line 1320, in do_open r = h.getresponse() File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1321, in getresponse response.begin() File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 296, in begin version, status, reason = self._read_status() File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 257, in _read_status line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1") File "C:\Users\阿东\AppData\Local\Programs\Python\Python37\lib\socket.py", line 589, in readinto return self._sock.recv_into(b) socket.timeout: timed out 进程已结束,退出代码1
这个错误是由于连接超时引起的。根据你提供的错误信息,看起来是在连接到某个 URL 时发生超时。你可以尝试增加超时时间来解决这个问题。在你的代码中找到以下行:
```python
response = urlopen(self._login_url, timeout=self._timeout)
```
将 `timeout` 的值增加一些,例如:
```python
response = urlopen(self._login_url, timeout=60)
```
这将把超时时间设置为 60 秒,你可以根据需要进行调整。如果超时时间仍然不够长,可以继续增加。
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