Pip 知道 pyx 包:
$ pip search pyx
PyX - Python package for the generation of PostScript and PDF files
尝试安装它会报错:
$ pip install pyx
Collecting pyx
Could not find any downloads that satisfy the requirement pyx
Some externally hosted files were ignored as access to them may be unreliable (use --allow-external pyx to allow).
No distributions at all found for pyx
我按照错误消息使用--allow-external pyx
了,但得到了不同的错误:
$ pip install --allow-external pyx
You must give at least one requirement to install (see "pip help install")
如何使用 pip 安装 pyx 包?