Mirror of YDB github repos https://code.mastervirt.ru/ydb/atom?h=roadmap 2022-05-04T10:34:25Z 2022-05-04T10:34:25Z say say@yandex-team.ru 2022-05-04T10:34:25Z urn:sha1:692098a9726abf54da61f833036c8965e28e1f18 The arcadia main function (library/python/runtime_py3/main/main.c::pymain) calls Py_InitializeFromConfig() before going to the vanilla python Py_Main(). Py_InitializeFromConfig() overrides sys.prefix and sys.exec_prefix by default values ('/var/empty') and then import __res module (and importer.pxi as a part of it). importer.pxi::_init_venv() set a proper value to sys.prefix and sys.exec_prefix attributes. Py_Main() in turn also calls Py_InitializeFromConfig() and reset the sys attributes to their default values again. I don't know why it was not a problem in python 3.9 but in 3.10 it is. ref:0466de641f92d66c4f992ae12c02d8d58db397f6