when I run a python module which imports ssl.py , error occurs . but it's ok to run the straight python.
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the error information is: Python Error: ImportError: dlopen(/Users/garyzhang/anaconda2/lib/python2.7/lib-dynload/_ssl.so, 2): Symbol not found: _SSL_CTX_set_alpn_protos Referenced from: /Users/anaconda2/lib/python2.7/lib-dynload/_ssl.so Expected in: /Applications/MATLAB_R2016a.app/bin/maci64/libssl.1.0.0.dylib in /Users/anaconda2/lib/python2.7/lib-dynload/_ssl.so
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Robert Snoeberger
2016 年 7 月 26 日
Your issue looks like a library conflict with MATLAB's version of libssl, based on the part of the error message that says, "Expected in: /Applications/MATLAB_R2016a.app/bin/maci64/libssl.1.0.0.dylib". Notice that the library is part of the installation for MATLAB R2016a.
A workaround to try is to set the dlopen flag to RTLD_NOW | RTLD_DEEPBIND [1], which can be done with Python's sys.setdlopenflags [2]. This workaround was successful in a similar library conflict [3].
Example
>> RTLD_NOW = 2;
>> RTLD_DEEPBIND = 8;
>> flag = bitor(RTLD_NOW, RTLD_DEEPBIND); % RTLD_NOW | RTLD_DEEPBIND
>> py.sys.setdlopenflags(int32(flag));
>> py.importlib.import_module('_ssl');
References
1 件のコメント
Adam Roach
2019 年 12 月 13 日
Hi Robert,
I'm having this same problem and trying to follow the workaround you described but the setdlopenflags line is throwing an exception:
Undefined variable "py" or class "py.sys.setdlopenflags".
I'm running Matlab R2018b, with python 3.7 on a windows 10 machine.
その他の回答 (3 件)
Bo Li
2016 年 7 月 25 日
Did you call "import matlab.engine" before "import ssl"? What happens if you call "import ssl" before "import matlab.engine"?
It looks like the library used by your ssl.py is not compatible with the libssl shipped by MATLAB.
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