安装jupyterlab报错：ERROR: Could not find a version that satisfies the requirement jupyterlab (from versi

Installing jupy

The reason is the mirror used. You only need to use the input from another website to solve the problem:

Simple Index

Use command:

pip install jupyterlab -i http://pypi.doubanio.com/simple/ --trusted-host pypi.doubanio.com

You can install it successfully