Public bug reported:
This worked find in 18.04, but in 19.04, when trying to "import foo"
inside a multicorn module, if "foo" has been installed by pip under
/usr/local/lib/python3.x/foo, multicorn fails to find it and gives an
error like this in the Postgres log file:
2019-04-23 14:12:25.450 BST [15899] postgres@foo ERROR: Error in python:
ModuleNotFoundError
2019-04-23 14:12:25.450 BST [15899] postgres@foo DETAIL: Traceback (most
recent call last):
File "/usr/lib/python3/dist-packages/multicorn/__init__.py", line
543, in get_class
module = import_module(module_name)
File "/usr/lib/python3/dist-packages/multicorn/__init__.py", line
523, in import_module
__import__(name)
File "/usr/lib/python3/dist-packages/paiyroll_fdw/__init__.py", line
32, in <module>
from dateutil.parser import isoparse
ModuleNotFoundError: No module named 'dateutil'
Upon further investigation, it seems that the module load path (i.e.
"sys.path") does not look where pip does its installations; the value of
sys.path is at the point where the exception is thrown is:
path=['/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6
/lib-dynload', '/usr/lib/python3/dist-packages']
and clearly does not include /usr/local/lib/python3.x.
** Affects: postgresql-multicorn (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1825989
Title:
Multicorn cannot find Python module installed using pip
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