我正在尝试在 Google colab 上安装并运行 sunpy。它需要 astropy 版本 3.1 或更高版本的软件包。即使在安装 astropy 版本 3.2.1 后，当我导入 sunpy 时，它也会出现以下错误：
ContextualVersionConflict Traceback (most recent call last)
<ipython-input-10-1a62dedba559> in <module>()
----> 1 import sunpy
5 frames
/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py in
resolve(self, requirements, env, installer, replace_conflicting,
extras)
789 # Oops, the "best" so far conflicts with a
dependency
790 dependent_req = required_by[req]
--> 791 raise VersionConflict(dist,
req).with_context(dependent_req)
792
793 # push the new requirements onto the stack
ContextualVersionConflict: (astropy 3.0.5
(/usr/local/lib/python3.6/dist-packages),
Requirement.parse('astropy>=3.1'), {'sunpy'})
pip list 给出以下结果：
Package Version
------------------------ …