I am trying to increase the font size of my code on IDLE 3.8. For this I go on IDLE->Preferences->Fonts/Tabs and change from there. But the length of my settings window is by default quite large so the OK/Apply buttons are not visible and I can't save any changes to the font size.
Is there a way I can either reduce the size of window or any alternate way to increase font? I am using macOS version 10.13.6.
3.8 is over 5 years old. I had the same problem on my macBook Air. So I added a new page to the settings dialog and rearranged things to make the dialog shorter. If you cannot upgrade to 3.11 or 3.12, here are 2 things you can do.
In not already, move the dock to one side instead of top/bottom to have more vertical room. I did this on my macBook Air.
Start Terminal in your home directory. Enter ls -a to confirm the presence of .idlerc. cd .idlerc. ls and find config-main.cfg. Edit that file. If nothing else, enter idle3 config-main.cfg. Change the font-size there. Be careful not to add noise to the file. Save.