问题描述
我正在尝试通过pip install -r requirements.txt下载，它会下载所有要求，但最后会抛出此错误
Running setup.py install for lxml ... error
请帮助我使用 python 2.7.18
这是完全错误，上面三行显示了最后的工作行。
Running setup.py install for lxml ... error
ERROR: Command errored out with exit status 1:
command: 'c:\users\hp\appdata\local\programs\python\python39\python.exe' -u -c 'import sys,setuptools,tokenize; sys.argv[0] = '"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-5_5qvbii\\lxml\\setup.py'"'"'; __file__='"'"'C:\\Users\\hp\\AppData\\Local\\Temp\\pip-install-5_5qvbii\\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\hp\AppData\Local\Temp\pip-record-cb9mbztf\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\hp\appdata\local\programs\python\python39\Include\lxml'
cwd: C:\Users\hp\AppData\Local\Temp\pip-install-5_5qvbii\lxml\
Complete output (77 lines):
Building lxml version 4.2.5.
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 **
Using build configuration of libxslt
running install
running build
running build_py
creating build
creating build\lib.win-amd64-3.9
creating build\lib.win-amd64-3.9\lxml
copying src\lxml\builder.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\cssselect.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\doctestcompare.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\ElementInclude.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\pyclasslookup.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\sax.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\usedoctest.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\_elementpath.py -> build\lib.win-amd64-3.9\lxml
copying src\lxml\__init__.py -> build\lib.win-amd64-3.9\lxml
creating build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\__init__.py -> build\lib.win-amd64-3.9\lxml\includes
creating build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\builder.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\clean.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\defs.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\diff.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\ElementSoup.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\formfill.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\html5parser.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\soupparser.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\usedoctest.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\_diffcommand.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\_html5builder.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\_setmixin.py -> build\lib.win-amd64-3.9\lxml\html
copying src\lxml\html\__init__.py -> build\lib.win-amd64-3.9\lxml\html
creating build\lib.win-amd64-3.9\lxml\isoschematron
copying src\lxml\isoschematron\__init__.py -> build\lib.win-amd64-3.9\lxml\isoschematron
copying src\lxml\etree.h -> build\lib.win-amd64-3.9\lxml
copying src\lxml\etree_api.h -> build\lib.win-amd64-3.9\lxml
copying src\lxml\lxml.etree.h -> build\lib.win-amd64-3.9\lxml
copying src\lxml\lxml.etree_api.h -> build\lib.win-amd64-3.9\lxml
copying src\lxml\includes\c14n.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\config.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\dtdvalid.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\etreepublic.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\htmlparser.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\relaxng.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\schematron.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\tree.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\uri.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\xinclude.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\xmlerror.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\xmlparser.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\xmlschema.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\xpath.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\xslt.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\__init__.pxd -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\etree_defs.h -> build\lib.win-amd64-3.9\lxml\includes
copying src\lxml\includes\lxml-version.h -> build\lib.win-amd64-3.9\lxml\includes
creating build\lib.win-amd64-3.9\lxml\isoschematron\resources
creating build\lib.win-amd64-3.9\lxml\isoschematron\resources\rng
copying src\lxml\isoschematron\resources\rng\iso-schematron.rng -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\rng
creating build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl
copying src\lxml\isoschematron\resources\xsl\RNG2Schtrn.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl
copying src\lxml\isoschematron\resources\xsl\XSD2Schtrn.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl
creating build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_abstract_expand.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_dsdl_include.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_message.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_skeleton_for_xslt1.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_svrl_for_xslt1.xsl -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt -> build\lib.win-amd64-3.9\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\hp\appdata\local\programs\python\python39\python.exe' -u -c 'import sys,'"'"'exec'"'"'))' install --record 'C:\Users\hp\AppData\Local\Temp\pip-record-cb9mbztf\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\hp\appdata\local\programs\python\python39\Include\lxml' Check the logs for full command output.```
解决方法
错误实际上是不言而喻的。 错误：需要Microsoft Visual C ++ 14.0。通过“ Visual Studio的构建工具”获得它：https://visualstudio.microsoft.com/downloads/ 因此，您需要相应地安装Visual Studio。
以后用于编译应用程序： 您需要根据用于编译应用程序的python版本重新分发Visual c ++。 远程PC（“客户PC”）也将需要此文件。如果进行Inoo设置，则可以包括可重新分发给安装程序的c ++。 互联网上有很多例子。