Question

我正在尝试使用pip工具安装scikits.audiolab。 Pip似乎从scikits.audiolab源目录中运行命令python setup.py egg_info。当它这样做时，我收到此错误：

Andrews-MacBook-Pro-2:scikits.audiolab-0.11.0 andrewhannigan$ pip install scikits.audiolab
Collecting scikits.audiolab
  Using cached scikits.audiolab-0.11.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 20, in <module>
      File "/private/var/folders/xb/qwlsm44s1wxfr82kytrgjtl80000gn/T/pip-build-vSZaU8/scikits.audiolab/setup.py", line 32, in <module>
        from numpy.distutils.core import setup
    ImportError: No module named numpy.distutils.core

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/xb/qwlsm44s1wxfr82kytrgjtl80000gn/T/pip-build-vSZaU8/scikits.audiolab

问题显然是无法导入numpy.distutils.core。查看setup.py脚本，这个导入很早就发生了（在下面的代码片段的底部）：

#! /usr/bin/env python
# Last Change: Fri Mar 27 05:00 PM 2009 J

# Copyright (C) 2006-2007 Cournapeau David <cournape@gmail.com>
#
# This library is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option) any
# later version.
#
# This library is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with this library; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

# TODO:
#   - check how to handle cmd line build options with distutils and use
#   it in the building process

from os.path import join
import os
import sys

# The following is more or less random copy/paste from numpy.distutils ...
import setuptools

from distutils.errors import DistutilsError
from numpy.distutils.core import setup

奇怪的是，如果我只是通过python setup.py运行setup.py脚本的上述片段，我就不会收到导入错误。 egg_info命令行参数如何影响setup.py运行的方式以及为什么突然使python无法从numpy.distutils.core导入？

Answer 1

scikits.audiolab setup.py个文件中存在问题。看看https://github.com/cournape/audiolab/blob/master/setup.py：

import os

# The following is more or less random copy/paste from numpy.distutils ...
import setuptools

from numpy.distutils.core import setup

它首先做的是从numpy导入。如果未安装numpy，则保证在您共享导入错误时失败。

我怀疑在安装尝试失败和安装成功之间，您使用pip install numpy手动安装了numpy。 egg_info不太可能与它有任何关系。

以下是scipy项目的setup.py {<1}}中演示如何解决此问题的演示：

def setup_package():
    ...
    build_requires = []
    try:
        import numpy
    except:
        build_requires = ['numpy']

    metadata = dict(
        ...
        setup_requires = build_requires,
        install_requires = build_requires,
    )

使用python setup.py egg_info时安装scikits.audiolab时出错

1 个答案: