pip 安装 docker-compose 超时

1：安装命令

pip install docker-compose

 异常信息

socket.timeout: The read operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/cli/base_command.py", line 188, in _main
    status = self.run(options, args)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/cli/req_command.py", line 185, in wrapper
    return func(self, options, args)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/commands/install.py", line 333, in run
    reqs, check_supported_wheels=not options.target_dir
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/resolution/legacy/resolver.py", line 179, in resolve
    discovered_reqs.extend(self._resolve_one(requirement_set, req))
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/resolution/legacy/resolver.py", line 362, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/resolution/legacy/resolver.py", line 314, in _get_abstract_dist_for
    abstract_dist = self.preparer.prepare_linked_requirement(req)
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py", line 469, in prepare_linked_requirement
    hashes=hashes,
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py", line 259, in unpack_url
    hashes=hashes,
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py", line 130, in get_http_url
    link, downloader, temp_dir.path, hashes
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py", line 281, in _download_http_url
    for chunk in download.chunks:
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/cli/progress_bars.py", line 166, in iter
    for x in it:
  File "/usr/local/lib/python3.6/site-packages/pip/_internal/network/utils.py", line 39, in response_chunks
    decode_content=False,
  File "/usr/local/lib/python3.6/site-packages/pip/_vendor/urllib3/response.py", line 564, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "/usr/local/lib/python3.6/site-packages/pip/_vendor/urllib3/response.py", line 529, in read
    raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
  File "/usr/lib64/python3.6/contextlib.py", line 99, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.6/site-packages/pip/_vendor/urllib3/response.py", line 430, in _error_catcher
    raise ReadTimeoutError(self._pool, None, "Read timed out.")
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.

网上有网友说加上超时时间，但并没有解决我这个问题。

pip --default-timeout=100 install docker-compose

这个应该是没有翻墙导致下载超时。所以需要修改pip 的源

按照网上例子，临时修改了pip的源，再次执行安装命令，也没有解决我的问题

[root@localhost bin]# pip install numpy -i https://pypi.tuna.tsinghua.edu.cn/simple/

后来又看到一篇博客，这种方式解决了我的问题，修改源借鉴的是https://blog.csdn.net/h106140873/article/details/103858931 博客。

1：在根目录下创建pip文件夹（我是使用的root用户）

mkdir ~/.pip

2：在 .pip目录中创建 pip.conf文件

 touch pip.conf

 3：编辑 pip.conf 文件，添加如下两行内容

[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple

再次执行 pip --default-timeout=100 install docker-compose 命令，安装成功。并且下载速度很快

注：pip国内的一些镜像

  阿里云 http://mirrors.aliyun.com/pypi/simple/ 
  中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/ 
  豆瓣(douban) http://pypi.douban.com/simple/ 
  清华大学 https://pypi.tuna.tsinghua.edu.cn/simple/ 
  中国科学技术大学 http://pypi.mirrors.ustc.edu.cn/simple/