尝试在setup.py中指定的同一包中安装Python扩展模块(Cython)时出现ModuleNotFound

from setuptools import setup, Extension
from Cython.Build import cythonize

extensions = [
    Extension("my_module", ["my_module.pyx"])
]

setup(
    name="MyPackage",
    ext_modules=cythonize(extensions),
)

python setup.py build_ext --inplace

setup(
    name="MyPackage",
    install_requires=[
        "Cython",
        # 其他依赖项
    ],
    ext_modules=cythonize(extensions),
)

python -m venv myenv
source myenv/bin/activate  # 在 Windows 上使用 `myenv\Scripts\activate`
pip install .

import my_module

my_project/
├── my_module.pyx
└── setup.py

def hello():
    print("Hello from Cython!")

from setuptools import setup, Extension
from Cython.Build import cythonize

extensions = [
    Extension("my_module", ["my_module.pyx"])
]

setup(
    name="MyPackage",
    ext_modules=cythonize(extensions),
)

cd my_project
python setup.py build_ext --inplace
python setup.py install

import my_module
my_module.hello()