HelloWorld program

As the first program to learn, " Cython Use Case: Output Hello World ", there may be errors like the title.

In the actual file there isCython.BuildYes, this is because of environment configuration issues.

How to call Python3 in cmd

PyCharmmiddle yesPython3, already installedCython, but inCMDcall directly inpythonis usingPython2.7, and is not installedCython, hence the error.

in this machinepythoncorrespond2.7,pycorrespond3.7.

py setup . py build_ext   - - inplace
 # replace 
python setup . py build_ext   - - inplace

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Still can't solve the problem, because the call herePython 3.7not yetPyCharmmiddlePython,PyCharmmiddlePythonYesAnacondain, therefore, inPython3.7install again inCythonsolve this problem.

py - m pip install Cython # -m means to call the module 
py setup . py build_ext   - - inplace

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References