Cannot reproduce second README example

[peterdesmet]

Using these files that I save in data:

https://aloftdata.s3-eu-west-1.amazonaws.com/baltrad/hdf5/nldbl/2013/11/23/nldbl_vp_20131123T0000Z.h5 https://aloftdata.s3-eu-west-1.amazonaws.com/baltrad/hdf5/nldbl/2013/11/23/nldbl_vp_20131123T0015Z.h5 https://aloftdata.s3-eu-west-1.amazonaws.com/baltrad/hdf5/nldbl/2013/11/23/nldbl_vp_20131123T0030Z.h5

I get an error if I want to reproduce the second README example:

from pathlib import Path
from vptstools.vpts import vpts

file_paths = sorted(Path("./data").rglob("*.h5"))  # Get all h5 files within the data directory
df_vpts = vpts(file_paths)

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/spawn.py", line 120, in spawn_main
    exitcode = _main(fd, parent_sentinel)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/spawn.py", line 129, in _main
    prepare(preparation_data)
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/spawn.py", line 240, in prepare
    _fixup_main_from_path(data['init_main_from_path'])
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/spawn.py", line 291, in _fixup_main_from_path
    main_content = runpy.run_path(main_path,
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen runpy>", line 291, in run_path
  File "<frozen runpy>", line 98, in _run_module_code
  File "<frozen runpy>", line 88, in _run_code
  File "/Users/peter_desmet/Coding/Repositories/enram/vptstools/test.py", line 5, in <module>
    df_vpts = vpts(file_paths)
              ^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/vptstools/vpts.py", line 256, in vpts
    with multiprocessing.Pool(processes=cpu_count) as pool:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/context.py", line 119, in Pool
    return Pool(processes, initializer, initargs, maxtasksperchild,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/pool.py", line 215, in __init__
    self._repopulate_pool()
  File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/multiprocessing/pool.py", line 306, in _repopulate_pool
    return self._repopulate_pool_static(self._ctx, self.Process,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If I print file_paths I get:

[PosixPath('data/nldbl_vp_20131123T0000Z.h5'), PosixPath('data/nldbl_vp_20131123T0015Z.h5'), PosixPath('data/nldbl_vp_20131123T0030Z.h5')]

[stijnvanhoey]

I tested the code for these files in both Python 3.9 and 3.11 and I can not reproduce the error. It is also strange the release github action which checks for 3.11 on macos does not report an error.

Could you specify the error itself that is raised?

[peterdesmet]

Hmm, if I run this from the command line python3 my_script.py I get the error, but not in a Jupyter notebook. So I would ignore the error.