1：安装命令
pip install docker-compose
异常信息
socket.timeout: The read operation timed outDuring 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 _mainstatus = self.run(options, args)File '/usr/local/lib/python3.6/site-packages/pip/_internal/cli/req_command.py', line 185, in wrapperreturn func(self, options, args)File '/usr/local/lib/python3.6/site-packages/pip/_internal/commands/install.py', line 333, in runreqs, check_supported_wheels=not options.target_dirFile '/usr/local/lib/python3.6/site-packages/pip/_internal/resolution/legacy/resolver.py', line 179, in resolvediscovered_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_oneabstract_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_forabstract_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_requirementhashes=hashes,File '/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py', line 259, in unpack_urlhashes=hashes,File '/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py', line 130, in get_http_urllink, downloader, temp_dir.path, hashesFile '/usr/local/lib/python3.6/site-packages/pip/_internal/operations/prepare.py', line 281, in _download_http_urlfor chunk in download.chunks:File '/usr/local/lib/python3.6/site-packages/pip/_internal/cli/progress_bars.py', line 166, in iterfor x in it:File '/usr/local/lib/python3.6/site-packages/pip/_internal/network/utils.py', line 39, in response_chunksdecode_content=False,File '/usr/local/lib/python3.6/site-packages/pip/_vendor/urllib3/response.py', line 564, in streamdata = self.read(amt=amt, decode_content=decode_content)File '/usr/local/lib/python3.6/site-packages/pip/_vendor/urllib3/response.py', line 529, in readraise 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_catcherraise 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/
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