Python 2.7，PIP："失败的建筑轮..."

Question

第一次使用pip，尝试使用python-docs-示例教程库。当我运行“python-m pip安装-rrequirements.txt”命令时，许多脚本被拉进来，但是然后我得到了一系列“失败的构建轮”错误。其中一个显示在所附的代码块中（请原谅手动输入的换行符）。

有什么问题？有人见过这个吗？我没有修改库的任何部分或使用它的代码，我使用的是Python 2.7。12应该对PIP有良好的内置支持。

  Running setup.py bdist_wheel for PyYAML ... error
  Complete output from command C:\users\owner\python-docs-samples\env\Scripts\python.exe 
-u -c "import setuptools, tokenize;__file__='c:\\users\\owner\\appdata\\local\\temp\\
pip-build-86ysrg\\PyYAML\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__)
.read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d c:\users\owner\appdata
\local\temp\tmpljy6z0pip-wheel- --python-tag cp27:
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win32-2.7
  creating build\lib.win32-2.7\yaml
  copying lib\yaml\composer.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\constructor.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\cyaml.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\dumper.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\emitter.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\error.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\events.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\loader.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\nodes.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\parser.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\reader.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\representer.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\resolver.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\scanner.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\serializer.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\tokens.py -> build\lib.win32-2.7\yaml
  copying lib\yaml\__init__.py -> build\lib.win32-2.7\yaml
  running build_ext
  creating build\temp.win32-2.7
  creating build\temp.win32-2.7\Release
  checking if libyaml is compilable
  error: [Error 2] The system cannot find the file specified

  ----------------------------------------
  Failed building wheel for PyYAML
  Running setup.py clean for PyYAML

Answer 1

问题是Windows，如果没有安装编译器工具链，您将在Windows中遇到依赖性问题和C扩展的构建问题。

手动安装某些依赖项的二进制版本（如PyYAML）是一种解决方案（例如，建议使用easy_安装）。要从源代码构建二进制控制盘，还可以在此处下载免费的Visual C编译器For Python 2.7：https://www.microsoft.com/en-ca/download/details.aspx?id=44266

Answer 2

对我来说，这个问题在Ubuntu 16上通过升级pip得到了解决：

pip install --upgrade pip

Answer 3

安装通用依赖项

sudo apt-get install build-essential autoconf libtool pkg-config python-opengl python-pil python-pyrex python-pyside.qtopengl idle-python2.7 qt4-dev-tools qt4-designer libqtgui4 libqtcore4 libqt4-xml libqt4-test libqt4-script libqt4-network libqt4-dbus python-qt4 python-qt4-gl libgle3 python-dev