Question

我有一个要使用Cython编译的Python项目。运行安装脚本后，我尝试运行test.py并收到以下错误：

Traceback (most recent call last):
  File "test.py", line 1, in <module>
    from root.pm1 import subsubsub as method
  File "C:\parent_path\root\pm1\__init__.py", line 1, in <module>
    from .f0 import subsubsub
  File "root\pm1\f0.py", line 1, in init root.pm1.f0
    import root.pm0 as runner
  File "<frozen importlib._bootstrap>", line 1006, in _handle_fromlist
TypeError: hasattr(): attribute name must be string

当我使用root\pm1\f1.py的第二行而不是第一行时，测试脚本将按预期工作。

我对更改编译器指令中的language_level并不满意，并且不确定问题出在哪里。我做错了什么吗？如果没有，我是否有办法编译代码，以便可以使用第一种导入而不是第二种导入？

也可以在以下位置找到以下代码：https://github.com/bpolinsky/example

项目结构：

setup.py
test.py
root
  L __init__.py
  L pm0
     L __init__.py
     L f0.py
  L pm1
     L __init__.py
     L f0.py

root / __ init __。py

root / pm0 / __ init __。py

from .f0 import do_thing

all = [
    do_thing,
]

root / pm0 / f0.py

def do_thing():
    print("doing thing 0")

root / pm1 / __ init __。py

from .f0 import subsubsub

root / pm1 / f0.py

import root.pm0 as runner
#import root.pm0.f0 as runner  # This one works!!

def subsubsub():
    runner.do_thing()

setup.py

from distutils.core import setup
from distutils.extension import Extension
import os
import sys

from Cython.Build import cythonize
from Cython.Distutils import build_ext
from Cython.Compiler import Options

Options.emit_code_commments = False
Options.generate_cleanup_code = True


TOP_DIR = "root"
NAME = "root"
PACKAGES = [
"root",
]
INCLUDE = []

file_ending = ".py"
COMPILE_ARGS = ["-O3", "-Wall"]
LINK_ARGS = ["-g"]


def get_extensions(directory):
    extensions = list()

    for f in os.listdir(directory):
        path = os.path.join(directory, f)
        if os.path.isfile(path) and path.endswith(file_ending):
            path_split = os.path.split(path)

            ext_name = path_split[0].replace(os.path.sep, ".")

            module_name = path_split[1][:-len(file_ending)]
            if module_name != "__init__":
                ext_name += "." + str(module_name)


            extensions.append(
                Extension(
                    ext_name,
                    [
                        path,
                    ],
                    include_dirs=[
                        ".",
                    ],
                    extra_compile_args=COMPILE_ARGS,
                    extra_link_args=LINK_ARGS,
                )
            )
        elif os.path.isdir(path):
            extensions.extend(get_extensions(path))

    return extensions


# Build Extension objects
extensions = get_extensions(TOP_DIR)

# Do setup
setup(
    name=NAME,
    packages=PACKAGES,
    ext_modules=cythonize(
        extensions,
        compiler_directives={
            "language_level": "3",
        },
    ),
    include_dirs=INCLUDE,
    cmdclass={
        "build_ext": build_ext,
    },
)

test.py

from root.pm1 import subsubsub as method

method()

其他信息：

Python 3.6.0（思想部署管理器）
Windows 10
Cython版本0.28.5
用于运行setup.py的Visual C ++ 2015 x86 x64交叉构建工具命令提示符（在EDM Shell中）

Answer 1

问题在于__all__是一个字符串列表，而不是函数列表。

如果使它看起来像这样：

__all__ = [
    'do_thing',
]

应该工作正常。

使用cythonized代码导致“ TypeError：hasattr（）：属性名称必须为字符串”

1 个答案: