Turn the "python" widget into a REPL interactive shell

[yungyuc]

Currently the viewer is using a primitive widget to take Python code to run and it is not easy to use:

There should be a REPL widget working like the Python REPL or iPython.

• Add an interactive Python command console Add an interactive Python command console #145
• Remove the Python text box at the right-hand side Remove the Python text box at the right-hand side #146
• Redirect the buffered outputs to the console display, see discussions in WIP: add python console #144 (comment) @tigercosmos
  • Console stdout stderr #148
• Support to type more than one line.
• Add a run button for the command line, it will be more straightforward.
  • It might not be the best way for the console UI. Need more thoughts.

[tai271828]

REPL is a best-practice commonly seen in this use case. +1 to the idea.

[yanagiragi]

LGTM. How about also provide an another feature to load *.py and execute it in the viewer?

[yungyuc]

LGTM. How about also provide an another feature to load *.py and execute it in the viewer?

Agree. It could be done by extending the new "app" sub system (#100).

[yungyuc]

@tigercosmos As we discussed in #144 (comment) , we should redirect the buffered outputs to the console display.

[tigercosmos]

@yungyuc yes, I will work on it.
I think we can also add the following as TODOs

• add a run button for the command line, it will be more straightforward.
• support to go to the next line

[yungyuc]

@yungyuc yes, I will work on it.

I think we can also add the following as TODOs

• add a run button for the command line, it will be more straightforward.

• support to go to the next line

Thanks. Agree. Items added.

[yungyuc]

@tigercosmos There is one remaining part unfinished:

• Support to type more than one line.

Do you plan to finish it?

[tigercosmos]

@yungyuc nit for now, I will unassign myself

[yungyuc]

@yungyuc nit for now, I will unassign myself

Thanks for letting me know. I am closing it.