pip install apachecn-dl-zh-pt3 无法下载，找不到包

在anaconda创建的一个虚拟环境中，使用 **pip install apachecn-dl-zh-pt3**：
弹出：
Looking in indexes: http://pypi.douban.com/simple/
ERROR: Could not find a version that satisfies the requirement apachecn-dl-zh-pt3 (from versions: none)
ERROR: No matching distribution found for apachecn-dl-zh-pt3

因为修改了默认源，所以我转向pypi下载，**pip install apachecn-dl-zh-pt3 -i https://pypi.org/**
Looking in indexes: https://pypi.org/
ERROR: Could not find a version that satisfies the requirement apachecn-dl-zh-pt3 (from versions: none)
ERROR: No matching distribution found for apachecn-dl-zh-pt3

No files, tests, or entry points are mentioned. Start by reproducing the reported pip commands and checking how this package is published; done means the package is discoverable from the intended index and can be installed successfully.

Written by the indexing model from the issue text.