The default zone is Python2.7, Python2.7 soon will no longer continue to be updated when the system is always prompt, simply to upgrade directly to Python 3.7.
Upgrade steps:
1, install Python 3.7
brew install python@3
After installation you need to use python3.7 to use in the terminal below. For ease of use, we do soft connection, it deleted the original python 2.7 link.
2、
rm -rf /usr/local/bin/python
ln -s /usr/local/bin/python3.7 /usr/local/bin/python
Finished soft connection and you're done.
/ Bin / python when deleting / usr / local authority because the system does not prompt joined Rootless, need to restart the computer command + R into recovery mode, open Terminal.
csrutil disable # this command is executed, closed limit.
reboot # reboot the system
After the operation is complete for safety, reopen Rootless
csrutil enable