python runtime error using goes_timerange - windows

[zmcfire]

Hi All - Love using 'goes_latest' - works great, Unable to use 'goes_timerange' and get python runtime error on windows. Suggestions to address spawn and fork issues in python setup or in goes2go? The toml config file has cpu set as 2 which did not affect 'goes-latest' use.

        if __name__ == '__main__':
            freeze_support()
            ...

Thanks, Jeff

[blaylockbk]

Hi @zmcfire,

Glad you like using GOES-2-go. I have been pleasantly surprised how many people find this package useful.

I'm not able to reproduce you error with the current main branch. Are there any more details you can give me? I have made some changes recently that might have inadvertently fixed what you were running into?? Let me know if you still see the problem.

[karlzam]

Hello - I just had the same issue. This is the full error message:

      RuntimeError: 
              An attempt has been made to start a new process before the
              current process has finished its bootstrapping phase.
              This probably means that you are not using fork to start your
              child processes and you have forgotten to use the proper idiom
              in the main module:
                  if __name__ == '__main__':
                      freeze_support()
                      ...
              The "freeze_support()" line can be omitted if the program
              is not going to be frozen to produce an executable.
              To fix this issue, refer to the "Safe importing of main module"
              section in https://docs.python.org/3/library/multiprocessing.html

Also getting a user warning that says MetPy hasn't been imported. I used the environment.yml to create my goes2go env.

The code I'm trying to run:

g2 = goes_timerange(start ='2019-10-27', end='2019-10-29', satellite = 'EAST', product='ABI-L1b-Rad', domain='C', return_as='xarray',
                   download=False)

It seems to be angry here:

import sys; sys.path.append(r'C:\Program Files\JetBrains\PyCharm Community Edition 2024.2.1\plugins\python-ce\helpers\pydev'); import pydevd; pydevd.settrace(host='127.0.0.1', port=64271, suspend=False, trace_only_current_thread=False, patch_multiprocessing=True); from pydevd import SetupHolder; SetupHolder.setup = {'port': 64271, 'vm_type': None, 'client': '127.0.0.1', 'server': False, 'DEBUG_RECORD_SOCKET_READS': False, 'multiproc': False, 'multiprocess': True, 'save-signatures': False, 'save-threading': False, 'save-asyncio': False, 'print-in-debugger-startup': False, 'cmd-line': False, 'module': False, 'help': False, 'file': 'C:\\Users\\kzammit\\repositories\\geospatial\\goes-2-go.py', 'qt-support': 'auto'}; from multiprocessing.spawn import spawn_main; spawn_main(parent_pid=11496, pipe_handle=1220)

[karlzam]

It runs fine when updated to:

g2 = goes_timerange(start='2019-10-27', end='2019-10-29', satellite = 'EAST', product='ABI-L1b-Rad', domain='C',
                    return_as='xarray', download=True, max_cpus=1, overwrite=False,
                    save_dir=r'C:\Users\kzammit\Documents\GOES', verbose=True)

But I tried to load the downloaded .nc files with xarray and get this error:

TypeError: Failed to decode variable 't': cannot inherit frozen dataclass from a non-frozen one