Send current line.

[ubaldot]

Improvement suggestion: A very useful feature would be to send only the current line. Both Matlaband Spyderhave it and it is widely used by the users of these apps. I am sure that VSCodeusers would enjoy it as well! :)

[FabianHofmann]

@hoangKnLai, I think this would be a very helpful feature. If you want, you could point me to the part where this would be implemented and I could try to draft a PR.

[hoangKnLai]

Happy to have someone else working on this project 😄.

Hmm. Where to start...

At the moment, the framework is like this:

• For any IPython Command, call cmd, nExec = getIpythonCommand(document, selection) --> execute(terminal, cmd, nExec)
  • execute simply sendText to console with some time delay between each send

An option is to look into extending runCursor() which uses the framework above.

P.S. I really should start actually commenting the code properly to typescript standard.

[WilliamsTravis]

Hi, thanks so much for this extension it's working great for me! I would also find the single line execution useful, so I'd like to second Ubaldo79's comment. In the meantime, as a work around for anyone else who'd like this, a combination of the multi-command extension and this one has been working for me with this key binding in keybindings.json:

    {
        "key": "f9",
        "command": "extension.multiCommand.execute",
        "args": {
            "sequence": [
                "expandLineSelection",
                "ipython.runSelections",
                "cursorRight"
            ]
        }
    }

[hoangKnLai]

Plan to deploy today's update soon which includes:

• Handling for a run line at cursor that also works for multi-cursor selections.
  • Basically, any empty cursor anywhere is the same as selected a line at that cursor position
  • Three cursors: 1 select line 4, 1 on line 6 (without selection), and 1 partial selection on line 8
  • NOTE: line 6 cursor is none so it defaulted to use the whole line (trimmed to handle indent error), and stacked into a single run. This helps with the race conditions between vscode.sendText() to IPy.In[n] to IPy.Out[n].

• Better handling of code block and cells:

  • Remove empty lines in a code block

  • Left trim line while preserving python indentation. E.g.,

    # Editor:
    for _ in range(4):
    # %% Indented Cell with empty line(s) can now be executed correctly
    i = 1
    print('test 1')
    if i % 2:
        print('i % 2')
    
        print('i % 2 + 1')

    # IPython:
    In [1]: # %% Indented Cell 1
    ...: print('test 1')
    ...: if i % 2:
    ...:     print('i % 2')
    ...:     print('i % 2 + 1')
    ...: 
    test 1    

  • NOTE: a weird side effect with sending text block is IPython not always rendering the Out[n]: test 1 and just test 1. Definitely not very pythonic 😉.

    
    # Editor:
    # NOTE: consequently also handle this hanging case   
    if True:  # a code block
    # ... some other code    
    # %% Indented Cell in a code block
    print('test 2\r\n test 3')

  Code outside the if code block but inside a cell

  print([1, 2, 3, 4, '5'])

  NOTE: running the cell is equivalent to running all codes in the cell and the indent-handling

  now correctly adjust it to unexpected indent error.

  ```ipython
  # IPython:
  In [2]: # %% Indented Cell 2
    ...: print('test 2\r\n test 3')
    ...: print([1, 2, 3, 4, '5'])
  test 2
   test 3
  [1, 2, 3, 4, '5']

[WilliamsTravis]

Works like a charm! Bravo.