You need to go into your Preferences under privacy and security, general, and allow Python 3.7 to install. Also it took me about six times restarting the installer, you could watch it stepping through the install then halting, I'd start again, and again, but it ran fine afterwards, even better than on 10.14. It starts very quickly. My biggest problem is going back and modifying all my old Python 2.7 stuff to Python 3.7, like enclosing the print contents in parenthesis, i.e. print (x+y+z). The latter was not a requirement in 2.7. On Thursday, February 6, 2020 at 6:52:31 PM UTC-6, hao chen wrote: > > I downloaded the dmg, moved the SageMath folder to /Applications, and > opened the "sage" file with terminal, but I got > > *“python3.7” cannot be opened because the developer cannot be verified.* > > > Any help would be appreciated. Thanks! >
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