Issue2373

This failed to load:
  D:\apps\jython2.7.0\bin>jython ..\Demo\swing\JythonConsole\Console.py
I get a flash of window and then it disappeared and the program exited.

However this works fine:
  D:\apps\jython2.7.0\bin>jython ..\Demo\swing\TreeDemo.py

Here are some more my PC info:
D:\apps\jython2.7.0\bin>jython -V
Jython 2.7.0

D:\apps\jython2.7.0\bin>jython --print
D:\apps\jdk1.7.0_67\bin\java -Xmx512m -Xss1024k -classpath D:\apps\jython2.7.0\jython.jar;. -Dpython.home=D:\apps\jython2.7.0 -Dpython.executable=D:\apps\jython2.7.0\bin\jython.exe -Dpython.launcher.uname=windows -Dpython.launcher.tty=true org.python.util.jython

D:\apps\jython2.7.0\bin>jython -c "import platform; print platform.platform()"
Java-1.7.0_67-Java_HotSpot-TM-_64-Bit_Server_VM,_24.65-b04,_Oracle_Corporation-on-Windows_7-6.1-amd64

This code is failing due to sys.ps1 not being defined, per https://docs.python.org/2/library/sys.html#sys.ps1

Related issue I found: https://github.com/don/jythonconsole/issues/33

This demo is absolutely ancient code - JPython?!!! - and uses some arguable bad coding practices such as stopping threads and what appears to be an unnecessary late import of sys. The underlying problem is that it needs to now construct an interactive console much like org.python.util.jython. So something like this code snippet:

        // Now create an interpreter
        if (!opts.interactive) {
            // Not (really) interactive, so do not use console prompts
            systemState.ps1 = systemState.ps2 = Py.EmptyString;
        }
        InteractiveConsole interp = new InteractiveConsole();

At this point, sys.ps1 and sys.ps2 are defined.

Should fix for 2.7.1, but could slip to 2.7.2. We definitely can push this out to late in the RC process for 2.7.1 given it's demo code.

Slipping to 2.7.2, but remains an easy fix