python3.4安装中出现lxml错误

Question

我试图在命令提示符下运行以下命令-

pip install -r requirements.txt

但是它显示了很多错误，我不知道如何解决它们，因为我不熟悉python。在

错误包括： 1在

^{pr2}$

3。在

Failed building wheel for lxml
  Running setup.py clean for lxml
Failed to build lxml
Installing collected packages: lxml, cssselect, pyquery
  Found existing installation: lxml 4.0.0
    Uninstalling lxml-4.0.0:
      Successfully uninstalled lxml-4.0.0
  Running setup.py install for lxml ... error
    Complete output from command c:\python34\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\Mohana\\AppData\\Local\\Temp\\pip-build-9bz1xoev\\lxml\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\Mohana\AppData\Local\Temp\pip-rjvm3d2l-record\install-record.txt --single-version-externally-managed --compile:
    Building lxml version 3.5.0.
    Building without Cython.
    ERROR: b"'xslt-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"
    ** make sure the development packages of libxml2 and libxslt are installed **


4. 

    src\lxml\includes\etree_defs.h(14) : fatal error C1083: Cannot open include file: 'libxml/xmlversion.h': No such file or directory
        Compile failed: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 10.0\\VC\\Bin\\cl.exe' failed with exit status 2
        C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\Bin\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -I/usr/include/libxml2 /TcC:\Users\Mohana\AppData\Local\Temp\xmlXPathInity8a5suic.c /FoUsers\Mohana\AppData\Local\Temp\xmlXPathInity8a5suic.obj
        xmlXPathInity8a5suic.c
        C:\Users\Mohana\AppData\Local\Temp\xmlXPathInity8a5suic.c(1) : fatal error C1083: Cannot open include file: 'libxml/xpath.h': No such file or directory
        *********************************************************************************
        Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
        *********************************************************************************
        error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 10.0\\VC\\Bin\\cl.exe' failed with exit status 2

我真的需要帮我解决这些问题。我使用的是Windows10（英特尔处理器）和Python3.4。在

Answer 1

对于windows，如果whl也失败了，可以通过exe文件安装lxml。您可以从lxml下载它

希望这能对你有所帮助。在

Answer 2

对于python3.4或更高版本

在命令提示符下， 键入pip3 install lxml以防您想从网络自动下载和安装 另外，从下面下载lxml的.whl文件

对于32位：Download Here

对于64位：Download Here

下载wheel文件后，将命令提示符导航到下载.whl文件的位置，然后尝试 pip3 install“下载的whl file name”

Answer 3

正如@SaeX在this answer中所说，您可以找到预编译的 lxml的WHL与所需的模块和依赖项here。在

对于python3.4和win10，您的文件应该是lxml‑4.1.0‑cp34‑cp34m‑win_amd64.whl。然后可以使用pip安装：

pip install lxml‑4.1.0‑cp34‑cp34m‑win_amd64.whl