python 安装工具 : ImportError: cannot import name Library

Question

我有一台 Windows 7 64 位机器，想要安装 python 包 mgrs。我尝试使用 easy_install 并在 mgrs 目录中运行 python setup.py install 。 Easy_install 给我以下错误。

C:\Users\farrell>easy_install mgrs
Searching for mgrs
Reading https://pypi.python.org/simple/mgrs/
Best match: mgrs 1.1.0
Downloading https://pypi.python.org/packages/source/m/mgrs/mgrs-1.1.0.tar.gz#md5
=96e0c00f16d86a3f8b84c2c46cb68b8e
Processing mgrs-1.1.0.tar.gz
Writing c:\users\farrell\appdata\local\temp\easy_install-lzqjsi\mgrs-1.1.0\setup
.cfg
Running mgrs-1.1.0\setup.py -q bdist_egg --dist-dir c:\users\farrell\appdata\loc
al\temp\easy_install-lzqjsi\mgrs-1.1.0\egg-dist-tmp-sxkdib
Traceback (most recent call last):
  File "C:\Python27\Anaconda\Scripts\easy_install-script.py", line 9, in <module
>
    load_entry_point('setuptools==5.4.1', 'console_scripts', 'easy_install')()
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 2147
, in main
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 2133
, in with_ei_usage
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 2150
, in <lambda>
  File "C:\Python27\Anaconda\lib\distutils\core.py", line 152, in setup
    dist.run_commands()
  File "C:\Python27\Anaconda\lib\distutils\dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "C:\Python27\Anaconda\lib\distutils\dist.py", line 972, in run_command
    cmd_obj.run()
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 370,
 in run
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 613,
 in easy_install
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 643,
 in install_item
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 833,
 in install_eggs
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1055
, in build_and_install
  File "build\bdist.win-amd64\egg\setuptools\command\easy_install.py", line 1040
, in run_setup
  File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 63, in run_setup
  File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 109, in run
  File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 62, in runner
  File "build\bdist.win-amd64\egg\setuptools\sandbox.py", line 38, in _execfile
  File "c:\users\farrell\appdata\local\temp\easy_install-lzqjsi\mgrs-1.1.0\setup
.py", line 8, in <module>
ImportError: cannot import name Library

setup.py 的第 8 行是 从 setuptools 导入库作为扩展

对于导致问题的原因有什么帮助吗？

Answer 1

在旧版本的 setuptools 中，Library 类被导入到 setuptools 包中。自 1.1 版本以来就不再出现这种情况。

该 setup.py 脚本是针对比您安装的旧版本的 setuptools 编写的。

您应该能够通过编辑 setup.py 并将导入更改为来修复它:

from setuptools.extension import Library

安装后

对于 Windows 中的这个特定包，它似乎将构建的 DLL 安装到 site-packages 目录中。安装后，编辑 mgrs\core.py 并替换行:

local_dlls = os.path.abspath(os.__file__ + "../../../DLLs")

与:

import site
local_dlls = ";".join(site.getsitepackages())