> On 29 May 2020, at 12:44, Don Bowers <donald.bow...@zen.co.uk> wrote: > > iMac (2009) OS X El Capitan v 10.11.6 > > Sirs, A few days ago I downloaded and installed the latest release of python > 3.8.3. > > All seemed normal at first until I tried to Cut & Paste parts of a script I > was working on in the IDLE > environment. The following are screen shots that are generally self > explanatory; > <Screen Shot 2020-05-27 at 17.58.53.png> > As can be seen, the cut and copy are greyed out and inoperative and I don’t > remember the "set" and "clear" Breakpoints, at the bottom. It is as if > nothing had been selected. > Such a situation makes the editor practically unusable so I quit out of the > IDLE and Python. >
I get the same behaviour on macOS 10.15.5, both with 3.8.3 and the 3.9 beta. 3.7.4 works correctly. This happens both in the interactive shell and in edit windows. I’d guess this is a problem with the bundled copy of Tk. Could you file a bug on bugs.python.org <http://bugs.python.org/>? Ronald
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