Esa_snappy - No module named 'jpyutil'

development python
1

I’ve got the esa_snappy module built with SNAP 10 on Windows 11 using python 3.10. I’ve created the PYTHONPATH evironment variable pointing to the esa_snappy installation directory. The command import esa_snappy runs, but returns an error

ModuleNotFoundError                       Traceback (most recent call last)
Cell In[1], line 1
----> 1 import esa_snappy

File ~\.snap\snap-python\esa_snappy\__init__.py:62
     60 if module_dir not in sys.path:
     61     sys.path.append(module_dir)
---> 62 import jpyutil
     64 jpyutil.preload_jvm_dll()
     65 import jpy

ModuleNotFoundError: No module named 'jpyutil'

As per this page I’ve tried to set the LD_LIBRARY_PATH environment variable, but there doesn’t seem to be a file libjvm.so file in the Windows SNAP installation. The closest file I could find was jvm.lib in <SNAP install dir>\jre\lib, so I set LD_LIBRARY_PATH to that. No joy. Any ideas?

2

This answer could help you

3

Thanks. Followed that method. Created SNAP_HOME, installed OpenJDK and jpy. Same error.

4

I tried it again on a different Windows machine. This time I get the same “configuration failed” message from snappy-conf, but import esa_snappy runs fine. All of the test scripts in package tests directory seem to run fine.

5

For anyone else going through this, the answer was to install both SNAP and Python to paths without spaces, so not …\Program Files\…

The thread linked to by @edd_ss gave the answer, it’s just a few pages deep.

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