Message333378
Python virtual environments are awesome! Using venvs with an embedded Python interpreter has proven difficult, unfortunately. With conda environments it works. See appended a sample file to reproduce the behavior.
The core of the problem seems to be that a venv doesn't contain a full Python installation, and Py_Initialize() apparently doesn't support setting up the combination of venv directories and base installation correctly, i.e. setting sys.prefix and sys.base_prefix and potentially other values.
Observed behavior when trying to use a venv:
"""
Initializing... Fatal Python error: Py_Initialize: unable to load the file system codec
ModuleNotFoundError: No module named 'encodings'
Current thread 0x00001e90 (most recent call first):
"""
Expected behavior:
Setting Py_SetPythonHome() to a venv works and sets up all paths and prefixes correctly to use the venv, just like it does for a conda environment. |
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Date |
User |
Action |
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2019-01-10 14:05:02 | Dieter Weber | set | recipients:
+ Dieter Weber |
2019-01-10 14:04:59 | Dieter Weber | set | messageid: <1547129099.62.0.924394155356.issue35706@roundup.psfhosted.org> |
2019-01-10 14:04:59 | Dieter Weber | link | issue35706 messages |
2019-01-10 14:04:59 | Dieter Weber | create | |
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