IDLE for 3.7

[alloydog]

How did you install python3.7?

I downloaded it from python.org and did the usual "./configure", then "sudo make install".
Everything seemed to go OK, as when I query the versions, I get:

Output:
~$ python --version
Python 2.7.12
~$ python3 --version
Python 3.5.2
~$ python3.7 --version
Python 3.7.0

I thought I just needed to do the same for IDLE: cd to the idlelib directory and make the thing.