在安装pycurl库时遇到了这个问题：
pip install pycurlCollecting pycurl Using cached pycurl-7.45.2.tar.gz (234 kB) Preparing metadata (setup.py) ... error error: subprocess-exited-with-error × python setup.py egg_info did not run successfully. │ exit code: 10 ╰─> [1 lines of output] Please specify --curl-dir=/path/to/built/libcurl [end of output] note: This error originates from a subprocess, and is likely not a problem with pip.error: metadata-generation-failed× Encountered error while generating package metadata.╰─> See above for output.note: This is an issue with the package mentioned above, not pip.hint: See above for details. 在搜索之后猜测是不是版本不匹配问题，先升级了pip包：
pip install --upgrade pippip install --upgrade setuptoolspip install ez_setup再重新pip install pycurl还是不行，又尝试了以下命令：
pip install pycurl==7.43.0.5 -i "https://mirrors.bfsu.edu.cn/pypi/web/simple/"这次可以了，成功安装pycurl库之后运行结果是这样的：
Looking in indexes: https://mirrors.bfsu.edu.cn/pypi/web/simple/Collecting pycurl==7.43.0.5 Downloading https://mirrors.bfsu.edu.cn/pypi/web/packages/b9/21/7b0db498334b552094dc72960fb2e528699952c953652b585f0b3dd88c79/pycurl-7.43.0.5-cp37-cp37m-win_amd64.whl (1.7 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.7/1.7 MB 504.6 kB/s eta 0:00:00Installing collected packages: pycurlSuccessfully installed pycurl-7.43.0.5
