Cannot run jpterm

[ddkn]

Hello,

I have installed jpterm==0.1.22 and it is not able to run,

$ jpterm --server  http://127.0.0.1:8888/lab?token=8336db287151da7b73b663fd37bc2dd30d5ac1c26ad21b19
Error during application startup
Traceback (most recent call last):
  File "/home/ddkn/.local/lib/python3.10/site-packages/asphalt/core/runner.py", line 110, in run_application
    event_loop.run_until_complete(coro)
  File "/usr/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
    return future.result()
  File "/usr/lib/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
  File "/home/ddkn/.local/lib/python3.10/site-packages/txl/app.py", line 21, in start
    await super().start(ctx)
  File "/home/ddkn/.local/lib/python3.10/site-packages/asphalt/core/component.py", line 162, in start
    await super().start(ctx)
  File "/home/ddkn/.local/lib/python3.10/site-packages/asphalt/core/component.py", line 112, in start
    self.add_component(alias)
  File "/home/ddkn/.local/lib/python3.10/site-packages/asphalt/core/component.py", line 101, in add_component
    component = component_types.create_object(**config)
  File "/home/ddkn/.local/lib/python3.10/site-packages/asphalt/core/utils.py", line 182, in create_object
    plugin_class = self.resolve(type)
  File "/home/ddkn/.local/lib/python3.10/site-packages/asphalt/core/utils.py", line 163, in resolve
    raise LookupError(f"no such entry point in {self.namespace}: {obj}")
LookupError: no such entry point in asphalt.components: remote_kernelspecs

I have the following installed,

txl==0.1.22
asphalt==4.12
jupyterlab==4.0.9
jpterm==0.1.22

Assuming asphalt has an issue?

Appreciate any feedback!

[davidbrochart]

Thanks for reporting the issue.
Could you try in a fresh environment with pip install jpterm==0.1.24? After installation, make sure you have version 0.1.24 for all packages in : pip list | grep txl.

[ddkn]

Thanks for the response! Here is what I have done so far:

$ cd ~/tmp
$ python3 -m venv jpterm
$ . jpterm/bin/activate
(jpterm)$ pip install jupyterlab jpterm

$ pip list | grep txl
txl                       0.1.24
txl_cell                  0.1.24
txl_console               0.1.24
txl_editors               0.1.24
txl_file_browser          0.1.24
txl_image_viewer          0.1.24
txl_jpterm                0.1.24
txl_kernel                0.1.24
txl_launcher              0.1.24
txl_local_contents        0.1.24
txl_local_kernels         0.1.24
txl_local_terminals       0.1.24
txl_markdown_viewer       0.1.24
txl_notebook_editor       0.1.24
txl_remote_contents       0.1.24
txl_remote_kernels        0.1.24
txl_remote_terminals      0.1.24
txl_terminal              0.1.24
txl_text_editor           0.1.24
txl_widgets               0.1.24

$ pip freeze | grep jpterm
jpterm==0.1.24
txl_jpterm==0.1.24

Then I ran jupyter lab --no-browser and got the following error:

$ jpterm --server http://localhost:8888/lab?token=4eb67a118
8268dd65bd8890f30b44e4615c934b2b1b3e341
Error during application startup
Traceback (most recent call last):
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/asphalt/core/runner.py", line 1
10, in run_application
    event_loop.run_until_complete(coro)
  File "/usr/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
    return future.result()
  File "/usr/lib/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/txl/app.py", line 21, in start
    await super().start(ctx)
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/asphalt/core/component.py", lin
e 162, in start
    await super().start(ctx)
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/asphalt/core/component.py", lin
e 116, in start
    await asyncio.gather(*tasks)
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/txl_notebook_editor/components.
py", line 330, in start
    _kernelspecs = await kernelspecs.get()
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/txl_remote_kernels/components.p
y", line 44, in get
    d = r.json()
  File "/home/ddkn/tmp/jupyter/lib/python3.10/site-packages/httpx/_models.py", line 761, in
 json
    return jsonlib.loads(self.content, **kwargs)
  File "/usr/lib/python3.10/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.10/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.10/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[ddkn]

For context I am running on Kubuntu 22.04 with python 3.10

[davidbrochart]

It's jpterm --server http://localhost:8888/?token=4eb67a118 (without lab).

[ddkn]

Giving it a try, we make some progress!

Opening a created notebook I can see it!

However, when starting a notebook I get this:

$ jpterm --server http://localhost:8888/?token=b6f246b12ca4eebfe1c84d1dd0cafa8df96b38f8b1d04620
╭──────────────────────────────────────────────────────────────── Traceback (most recent call last) ────────────────────────────────────────────────────────────────╮
│ /home/ddkn/tmp/jupyter/lib/python3.10/site-packages/txl_launcher/components.py:39 in on_button_pressed                                                            │
│                                                                                                                                                                   │
│   36 │   async def on_button_pressed(self, event: Button.Pressed) -> None:                    ╭────────── locals ───────────╮                                     │
│   37 │   │   document = self.documents[event.button.id]()                                     │ document = NotebookEditor() │                                     │
│   38 │   │   self.main_area.show(document)                                                    │    event = Pressed()        │                                     │
│ ❱ 39 │   │   await document.open()                                                            │     self = _Launcher()      │                                     │
│   40                                                                                          ╰─────────────────────────────╯                                     │
│   41                                                                                                                                                              │
│   42 class LauncherComponent(Component):                                                                                                                          │
│                                                                                                                                                                   │
│ /home/ddkn/tmp/jupyter/lib/python3.10/site-packages/txl_notebook_editor/components.py:104 in open                                                                 │
│                                                                                                                                                                   │
│   101 │   async def open(self, path: str | None = None) -> None:                               ╭──────────── locals ────────────╮                                 │
│   102 │   │   if path is None:                                                                 │ kernel_name = Select.BLANK     │                                 │
│   103 │   │   │   kernel_name = await self.select_kernel()                                     │        path = None             │                                 │
│ ❱ 104 │   │   │   path = await self.create_empty_notebook(kernel_name)                         │        self = NotebookEditor() │                                 │
│   105 │   │   │   self.main_area.set_label(path)                                               ╰────────────────────────────────╯                                 │
│   106 │   │   self.path = path                                                                                                                                    │
│   107 │   │   self.ynb = await self.contents.get(self.path, type="notebook", format="json")                                                                       │
│                                                                                                                                                                   │
│ /home/ddkn/tmp/jupyter/lib/python3.10/site-packages/txl_notebook_editor/components.py:83 in create_empty_notebook                                                 │
│                                                                                                                                                                   │
│    80 │   │   │   i += 1                                                                       ╭──────────── locals ────────────╮                                 │
│    81 │                                                                                        │ kernel_name = Select.BLANK     │                                 │
│    82 │   async def create_empty_notebook(self, kernel_name: str) -> str:                      │        self = NotebookEditor() │                                 │
│ ❱  83 │   │   kernel = self.kernelspecs["kernelspecs"][kernel_name]                            ╰────────────────────────────────╯                                 │
│    84 │   │   path = await self.get_untitled()                                                                                                                    │
│    85 │   │   ynb = ydocs["notebook"]()                                                                                                                           │
│    86 │   │   ynb.set(                                                                                                                                            │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
KeyError: Select.BLANK

I assume we need to run the dev version for that as we need to create and run commands correct?

[davidbrochart]

Latest versions of Textual have breaking changes, it should work with pip install "textual<0.42".

[ddkn]

Thanks for the heads up and all the help! I will close this issue.

Cheers,