California State University, San Bernardino

Create a file named helloworld.pyx:
```python
def example():
    print("Hello World")
```

Create a file called setup.py:
```python
from setuptools import setup 
from Cython.Build import cythonize

setup(ext_modules = cythonize("helloworld.pyx"))
```

To compile and build the Cython file:
```python 
setup.py build_ext --inplace
```

You can now use your compiled Python extension via:
```python
import helloworld

helloworld.example()
```


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