Terry J. Reedy added the comment:
I have in mind the idea of enhancing run module options. In particular, I
think there should be a "Run in console" option ("python -i -m <file>".
However I do not understand exactly what you would want.
I believe you could now write an extension that would add 'pgzrun' to the Run
menu and define a function bound to that entry that would call subprocess with
"python -m pgzero <script>". Error tracebacks (and print() output, but games
should not do such) would appear in the console menu instead of Idle's Shell.
You could add '-i' to the invocation for post-mortem investigation.
Idle *simulates* running a file with "python -i -m <script>". What it actually
does (on Windows) is "pythonw -m .../idlelib/run.py". The editor contents are
compiled in the Idle process. The code must be complete at this time. For
tracebacks to work properly, it must be the same as displayed in the editor, so
adding an import line is a bad idea.
If both the process invocation and compile work, the code object is sent to the
process and exec'ed in a pseudo-main namespace. Output to stdout/err is sent
back to Shell. The only interpreter option I see here is run a different
version of python and run.py (not trivial).
The user process should import site.py and if present, sitecustomize and maybe
a 'usercustomize'. I am not familiar with these but you could investigate.
I do not see the point of an absolute zero boilerplate requirement. Kids manage
with "from turtle import *" and anyone should be able to deal with "from pgz
import *". Avoiding even that given people a wrong impression of what a proper
python file looks like and creates trouble that I see as unnecessary.
Since the solution to your problem seems to be a custom extension, patch, or
use of the site module, I am inclined to close this.
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nosy: +terry.reedy
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