python34 @3.4.3_2 ANSI escape code are disabled on input() with readline module

[maoutwo@…]

On OS X 10.9.5 with XCode 6.2, python34 @3.4.3_2 disables ANSI escape code on input() with readline module.

For example, the following command is executed by python34 @3.4.3_2 and Python 3.4.3 from python.org.

python -c 'import readline; input("\x1b[31;1mthis is a bold red prompt> \x1b[m");'

python34 @3.4.3_2 displays the following. ANSI escape code are displayed.

[31;1mthis is a bold red prompt> [m

Python 3.4.3 from python.org displayes the following. And the output is red and bold.

this is a bold red prompt>

[ned-deily (Ned Deily)]

I can reproduce the problem (on 10.10) as long as port py34-readline is not also installed. By default, MacPorts Pythons are linked with the MacPorts-provided BSD libedit library. The py*-readline ports replace the corresponding Python readline modules with ones linked with the (MacPorts-provided) GNU readline instead of libedit. The Pythons from python.org installers currently link with the Apple-supplied libedit in OS X; those versions of libedit are older than the current MacPorts one. So, one workaround is to just install py34-readline. That is currently required for some other ports, like py34-ipython, anyway.

There has been at least one other issue reported previously on the Python bug tracker that seemed to implicate the newer version of libedit provided in MacPorts (​http://bugs.python.org/issue23599). I meant to investigate it further before taking action, like reporting upstream, but I haven't gotten to it yet. Feel free to jump in.

[maoutwo@…]

Thank you for response.

Installing of py34-readline resolves this problem on OS X 10.9.5.

[jmroot (Joshua Root)]

Python 3.4 is long since EOL.