Just start learning python programming, according to the request of course environment Anaconda3 uninstall the latest version, installed Anaconda3-4.2.0 - Windows - x86_64, reshipment after the completion of the Anaconda prompt has been won't open, click on a flash back, after using an administrator to run, too,
With PowerShell PM system shows as follows: after

Online retrieval of a circle, and some say it's good environment variable is not set, some say the installation path have Spaces, according to these after reinstalling is still the problem, had to turn to god for help to see how to solve, thank you very much!