already in script mode

[itsshreyarora]

I am running my code but it shows already in script mode and fails to start server

[wang0618]

It seems like that you use path_deploy() to start pywebio server. Do you call any input or output functions of pywebio before path_deploy() call? In Server mode, PyWebIO’s input and output functions can only be called in the context of task functions.

See also: https://pywebio.readthedocs.io/en/latest/guide.html#server-mode-and-script-mode

[algopy]

@wang0618
working on Google colab notebook faced same issue :

Another one :

---

SessionNotFoundException Traceback (most recent call last)
in ()
9
10 if name=='main':
---> 11 app()

5 frames
in app()
5 from pywebio.session import local
6 def app():
----> 7 put_text("hello PyWebIO")
8
9

/usr/local/lib/python3.7/dist-packages/pywebio/output.py in put_text(sep, inline, scope, position, *texts)
377 """
378 content = sep.join(str(i) for i in texts)
--> 379 spec = _get_output_spec('text', content=content, inline=inline, scope=scope, position=position)
380 return Output(spec)
381

/usr/local/lib/python3.7/dist-packages/pywebio/output.py in _get_output_spec(type, scope, position, **other_spec)
352
353 if not scope:
--> 354 scope_name = get_scope()
355 else:
356 scope_name = scope

/usr/local/lib/python3.7/dist-packages/pywebio/output.py in get_scope(stack_idx)
292 """
293 try:
--> 294 return get_current_session().get_scope_name(stack_idx)
295 except IndexError:
296 logger.exception("Scope stack index error")

/usr/local/lib/python3.7/dist-packages/pywebio/session/init.py in get_current_session()
235
236 def get_current_session() -> "Session":
--> 237 return get_session_implement().get_current_session()
238
239

/usr/local/lib/python3.7/dist-packages/pywebio/session/threadbased.py in get_current_session(cls)
303 def get_current_session(cls) -> "ScriptModeSession":
304 if cls.instance is None:
--> 305 raise SessionNotFoundException("Can't find current session. It might be a bug.")
306 if cls.instance.closed():
307 raise SessionClosedException()

SessionNotFoundException: Can't find current session. It might be a bug.

SessionNotFoundException: Can't find current session. It might be a bug.

[wang0618]

@algopy PyWebIO don't support running in Google colab notebook

[algopy]

@wang0618
Can it be possible by using ngrok or local tunnel in colab?
How to deploy pywebio app from heroku or azure cloud?