使用PyQt4和python3时的分段错误

Question

使用ubuntu 16.04使用python（3.5.2）导入PYQt4时收到分段错误。例如，以下代码产生分段错误：

import PyQt4.QtCore

我想有些模块安装有不匹配...这是回溯：

Program received signal SIGSEGV, Segmentation fault.
0x000000000055c220 in PyType_IsSubtype ()
(gdb) backtrace
#0  0x000000000055c220 in PyType_IsSubtype ()
#1  0x00007ffff4969221 in vp_convertor () from /usr/local/lib/python3.5/dist-packages/sip.so
#2  0x00007ffff4969ab5 in sip_api_convert_to_void_ptr () from /usr/local/lib/python3.5/dist-packages/sip.so
#3  0x00007ffff5f41b7d in ?? () from /usr/lib/python3/dist-packages/PyQt4/QtCore.cpython-35m-x86_64-linux-gnu.so
#4  0x00007ffff5e1eb54 in PyInit_QtCore () from /usr/lib/python3/dist-packages/PyQt4/QtCore.cpython-35m-x86_64-linux-gnu.so
#5  0x000000000060605e in _PyImport_LoadDynamicModuleWithSpec ()
#6  0x0000000000606618 in ?? ()
#7  0x00000000004e9c56 in PyCFunction_Call ()
#8  0x000000000052ad74 in PyEval_EvalFrameEx ()
#9  0x000000000052d2e3 in ?? ()
#10 0x0000000000529332 in PyEval_EvalFrameEx ()
#11 0x0000000000528814 in PyEval_EvalFrameEx ()
#12 0x0000000000528814 in PyEval_EvalFrameEx ()
#13 0x0000000000528814 in PyEval_EvalFrameEx ()
#14 0x0000000000528814 in PyEval_EvalFrameEx ()
#15 0x000000000052e12b in PyEval_EvalCodeEx ()
#16 0x00000000004ebcc3 in ?? ()
#17 0x00000000005b7167 in PyObject_Call ()
#18 0x00000000005b7f8a in _PyObject_CallMethodIdObjArgs ()
#19 0x000000000051ba98 in PyImport_ImportModuleLevelObject ()
#20 0x00000000005c7688 in ?? ()
#21 0x00000000004e9bc7 in PyCFunction_Call ()
#22 0x00000000005b7167 in PyObject_Call ()
#23 0x0000000000523800 in PyEval_CallObjectWithKeywords ()
#24 0x0000000000526fbc in PyEval_EvalFrameEx ()
#25 0x000000000052d2e3 in ?? ()
#26 0x000000000052dfdf in PyEval_EvalCode ()
#27 0x00000000005fd2c2 in ?? ()
#28 0x00000000005ff76a in PyRun_FileExFlags ()
#29 0x00000000005ff95c in PyRun_SimpleFileExFlags ()
#30 0x000000000063e7d6 in Py_Main ()
#31 0x00000000004cfe41 in main ()

你对如何解决这个问题有任何想法吗？

• SIP版本是4.19.3
• PyQt5版本是5.9可能是它的问题？

提前致谢！

Answer 1

我今天也遇到了这个问题。我的Python 3和pip来自包管理器。但我随后在get-pip.py安装了新的点子。

从我从gdb获得的堆栈跟踪，似乎可能有一个替代的SIP库（我使用的是Python 3.6）：

/usr/local/lib/python3.6/dist-packages/sip.so和 /usr/lib/python3/dist-packages/sip.cpython-36m-x86_64-linux-gnu.so。

我通过您提供的以下代码进行了测试。如果我在.so中删除了/usr/local/lib，它没有抱怨。相反，分段错误消失了。