Cython

passCythonWillPythoncode toC codeand publishPython moduleError during export.

i.e. throughCythoncompilepyorpyxdocument:

background noun

• Microsoft Visual C++: referred to as Visual C++, MSVC, VC++ or VC, it is a C++ development tool under the Windows platform developed by Microsoft, with an integrated development environment, which can be used to edit and compile C, C++ and C++/CLI and other programming languages.
• Microsoft Visual Studio: referred to as VS, it is a series of development tool kits of Microsoft Corporation in the United States. It is a basically complete development tool set, including most of the tools required in the entire software life cycle, such as UML tools, code control tools , including the above integrated development environment Microsoft Visual C++.
• Internal version number: It can be seen from the above that VS contains VC, and there is a corresponding relationship between the versions. This correspondence is controlled by Microsoft's internal version. The above error message "Microsoft Visual C++ 9.0" is 9.0 It is an internal version of Microsoft Visual C++. We can find out what the corresponding VC version is based on this internal version, and what is the corresponding VS version.

The corresponding relationship between VS and VC and internal version is as follows:

problem explanation

could not find itvcvarsall.batdesignatedvc++The compiler compiles. Becausewindowsunder the platform,cythonis the callvc++The compiler generatesc filePerform bi generation and compilation to generatepydfile.

This problem is becauseC compilerThe related configuration is not set.

Which specific machine is requiredVC++version, see the following files:

. . ./Python37/Lib/distutils/msvccompiler.py _ _ _ _ _ _ _ _ _ _

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Find the following function:

which mentions,2.3After version, requiredVCversion insys.versionin, entercmd >> python >> import sys >> sys.versionTo view:

inMSC.vthe number after1900is to compile the currentPythonUsedVCversion information, but it is not the internal version number we are looking for, we need to find the major version number from this version informationmajorVersionand minor version numberminorVersion,majorVersion + minorVersionThe result is that we're looking for that build number. then here'smajorVersionandminorVersionHow to get it? We can get from the aboveget_build_version()Find the answer in the function:

majorVersion =  int ( s [ : - 2 ] )  -  6 
minorVersion =  int ( s [ 2 : 3 ] )  /  10.0 
# s is the 1900 above 
majorVersion =  19  -  6  =  13 
minorVersion =  00  /  10.0  =  0

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So, the build number ismajorVersion + minorVersion = 13 + 0.0 = 13.0, according to the above comparison table,

correspondVS2014andVC2014.

Looking at the program, there is really no2014:

But, the problem is, I can't findVS2014, by introducing here ,Python3.6correspondVS2015.

Be lazy first, download the smaller Visual C++ Redistributable for Visual Studio 2015 , the installation shows that it already exists, and the installation fails.

So download and installMicrosoft Visual Studio 2015,problem solved.

References