Interface doesn't load correctly

[srulikbd]

I'm running on windows 10 with python 3.9
the web interface used to worked until I tried cloning the repo again..
this is the error:

omptsource.py

  You can now view your Streamlit app in your browser.

  Local URL: http://localhost:8501
  Network URL: http://10.0.0.101:8501

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 116, i
n spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 125, i
n _main
    prepare(preparation_data)
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 236, i
n prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 287, i
n _fixup_main_from_path
    main_content = runpy.run_path(main_path,
  File "c:\users\user\appdata\local\programs\python\python39\lib\runpy.py", line 268, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "c:\users\user\appdata\local\programs\python\python39\lib\runpy.py", line 97, in _run_module_cod
e
    _run_code(code, mod_globals, init_globals,
  File "c:\users\user\appdata\local\programs\python\python39\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\User\Desktop\Srulik\Work\HuggingFace\BigScience\promptsource\promptsource\promptsource
.py", line 34, in <module>
    state = _get_state()
  File "C:\Users\User\Desktop\Srulik\Work\HuggingFace\BigScience\promptsource\promptsource\session.py",
 line 84, in _get_state
    session = _get_session()
  File "C:\Users\User\Desktop\Srulik\Work\HuggingFace\BigScience\promptsource\promptsource\session.py",
 line 74, in _get_session
    session_id = get_report_ctx().session_id
AttributeError: 'NoneType' object has no attribute 'session_id'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 116, i
n spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 125, i
n _main
    prepare(preparation_data)
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 236, i
n prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "c:\users\user\appdata\local\programs\python\python39\lib\multiprocessing\spawn.py", line 287, i
n _fixup_main_from_path
    main_content = runpy.run_path(main_path,
  File "c:\users\user\appdata\local\programs\python\python39\lib\runpy.py", line 268, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "c:\users\user\appdata\local\programs\python\python39\lib\runpy.py", line 97, in _run_module_cod
e
    _run_code(code, mod_globals, init_globals,
  File "c:\users\user\appdata\local\programs\python\python39\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\User\Desktop\Srulik\Work\HuggingFace\BigScience\promptsource\promptsource\promptsource
.py", line 34, in <module>
    state = _get_state()
  File "C:\Users\User\Desktop\Srulik\Work\HuggingFace\BigScience\promptsource\promptsource\session.py",
 line 84, in _get_state
    session = _get_session()
  File "C:\Users\User\Desktop\Srulik\Work\HuggingFace\BigScience\promptsource\promptsource\session.py",
 line 74, in _get_session
    session_id = get_report_ctx().session_id
AttributeError: 'NoneType' object has no attribute 'session_id'

[stephenbach]

I'm not sure of the root cause, but can you try downgrading to Python 3.8? I've seen that fix this error on OSes other than Windows.

[srulikbd]

I have got the same problem using python 3.8
what else should I do?

thx!

[srulikbd]

I restored the previous code which was ok, and now it's also working so I'm fine with it.

[tianjianjiang]

Just FYI: I've encontered a different issue with session on macOS but not as serious as yours. Therefore I guess something isn't stable with session states.

On the other hand, if you have time to try it, I would recommend you switch to WSL if haven't. (Judging by the error message you provided.)

[wade3han]

Hello, @srulikbd @tianjianjiang. I encountered same issue on macOS, and I can't find the way to solve this. Can you help me dealing with it?
My environment has streamlit==0.82.0, and I worked on fa7a84d. My python version is 3.8.

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/multiprocessing/spawn.py", line 116, in spawn_main
    exitcode = _main(fd, parent_sentinel)
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/multiprocessing/spawn.py", line 125, in _main
    prepare(preparation_data)
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/multiprocessing/spawn.py", line 236, in prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/multiprocessing/spawn.py", line 287, in _fixup_main_from_path
    main_content = runpy.run_path(main_path,
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/runpy.py", line 265, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/runpy.py", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "/Users/wade/miniconda3/envs/promptsource/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/Users/wade/promptsource/promptsource/promptsource.py", line 34, in <module>
    state = _get_state()
  File "/Users/wade/promptsource/promptsource/session.py", line 84, in _get_state
    session = _get_session()
  File "/Users/wade/promptsource/promptsource/session.py", line 74, in _get_session
    session_id = get_report_ctx().session_id
AttributeError: 'NoneType' object has no attribute 'session_id'

[tianjianjiang]

@wade3han Please try #411 and let me know whether it works or not, thank you!

[wade3han]

Thank you, but it is not working again unfortunately. With the same error.

[tianjianjiang]

@wade3han

Thank you, but it is not working again unfortunately. With the same error.

I just tested and confirmed that only python37 will work.

A brief background:
Mac had 2 significant changes that python must address accordingly. One is the Apple Silicon (M1), another is the strict policy of unsafe fork(). Therefore, python38 (backported from python39) is the minimum requirement for M1, and its multiprocessing by default uses spawn() instead of fork(). The spawn() change is probably universal so Windows with python38 won't work, either.

Please open a new issue ticket for the spawn() error you encountered, and then I will try to figure out how to make a compatible streamlit-based implementation for both python37 and python38.

In the meantime, please try to use python37 even if your Mac is with M1. (I guess our streamlit-based app does not involve any troublesome dependency that requires python38's M1-specific changes.)
For macOS, I recommend either pyenv or sudo port select python of MacPorts.

[wade3han]

@tianjianjiang Oh it works! Thanks. Downgrading the version of python (3.8 -> 3.7) works.