[英]Module can be imported from build directory but not from installed directory
This is encountered on Ubuntu 16.04.2, with GCC 5.4.0 and Python 3.5.2. 在具有GCC 5.4.0和Python 3.5.2的Ubuntu 16.04.2上会遇到这种情况。 So I built a module and inside the
build
directory I can easily import it without problem: 因此,我构建了一个模块,并且在
build
目录中可以轻松导入它,而不会出现问题:
➜ build git:(master) ✗ python3 -c "import foo"
➜ build git:(master) ✗
However, when I install the module into install_dir
(the module was built with cmake/make
and then make install --prefix=$install_dir
) and add its location into PYTHONPATH
, it doesn't work: 但是,当我将模块安装到
install_dir
(该模块是使用cmake/make
,然后make install --prefix=$install_dir
)并将其位置添加到PYTHONPATH
,它不起作用:
➜ ~ cd
➜ ~ echo $PYTHONPATH
$install_dir/lib/python3.5/site-packages:/usr/local/lib/python3.5/site-packages:
➜ ~ python3 -c "import foo"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "$install_dir/lib/python3.5/site-packages/foo/__init__.py", line 17, in <module>
from . import cpp
File "$install_dir/lib/python3.5/site-packages/foo/cpp/__init__.py", line 43, in <module>
exec("from . import %s" % module_name)
File "<string>", line 1, in <module>
File "$install_dir/lib/python3.5/site-packages/foo/cpp/common.py", line 21, in <module>
_common = swig_import_helper()
File "$install_dir/lib/python3.5/site-packages/foo/cpp/common.py", line 18, in swig_import_helper
return importlib.import_module(mname)
File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
SystemError: initialization of _common raised unreported exception
Note: naming has been changed to make the case more generous. 注意:命名已更改,使案子更加大方。 The funny thing is I ran the same script for 3 different devices with the fresh installed OS, only 1 has this problem (!).
有趣的是,我为3个不同的设备(全新安装的OS)运行了相同的脚本,只有1个出现此问题(!)。
What could be the main cause here that I can investigate further? 我可以在这里进行进一步调查的主要原因可能是什么? Or is this something funny caused by Python 3?
还是这是由Python 3引起的有趣?
Run into this problem today. 今天遇到这个问题。
The solution for me was: 我的解决方案是:
petsc
(3.7.3->3.7.6) and slepc
(3.7.3->3.7.4) petsc
(3.7.3-> 3.7.6)和slepc
(3.7.3-> 3.7.4) petsc4py
(3.7.0) and slepc4py
(3.7.0) petsc4py
(3.7.0)和slepc4py
(3.7.0)
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