python:导入 libpci 引发 SyntaxError

Question

我刚刚在我的机器上安装了 libpci:

$ pip2.7 install libpci

并尝试运行这个:

#!/usr/local/bin/python2.7
import libpci

print('hello libpci')

但这会引发以下语法错误:

Traceback (most recent call last):
  File "./test.py", line 2, in <module>
    import libpci
  File "/usr/local/lib/python2.7/site-packages/libpci/__init__.py", line 26, in <module>
    from libpci.wrapper import LibPCI
  File "/usr/local/lib/python2.7/site-packages/libpci/wrapper.py", line 26, in <module>
    from libpci._functions import pci_alloc
  File "/usr/local/lib/python2.7/site-packages/libpci/_functions.py", line 39
    def pci_alloc() -> ctypes.POINTER(pci_access):
                    ^
SyntaxError: invalid syntax

libpci 中怎么可能引发 SyntaxError？
是因为我缺少一些依赖项吗？

Answer 1

libpci project需要 Python 3.4 或更高版本。来自项目标签:

Categories
[...]
Programming Language :: Python :: 3
Programming Language :: Python :: 3.4

抛出语法错误，因为项目使用 annotations ，Python 3 功能，要配置 ctypes 层，请参阅 _ctypes_metadata() function .