使用pip安装face_recognition模块时出错

如何解决使用pip安装face_recognition模块时出错

我在Windows 10中使用vs代码。当我使用pip在vs代码中安装face_recognition时，出现以下错误，我也尝试在安装face_recognition之前安装dlib。

 ERROR: Command errored out with exit status 1:
     command: 'c:\users\admin\appdata\local\programs\python\python38\python.exe' -u -c 'import sys,setuptools,tokenize; sys.argv[0] = '"'"'C:\\Users\\Admin\\AppData\\Local\\Temp\\pip-install-fi__6w9v\\dlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\Admin\\AppData\\Local\\Temp\\pip-install-fi__6w9v\\dlib\\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\Admin\AppData\Local\Temp\pip-record-f5b3pskr\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\admin\appdata\local\programs\python\python38\Include\dlib'
         cwd: C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\
    Complete output (60 lines):
    running install
    running build
    running build_py
    package init file 'tools\python\dlib\__init__.py' not found (or not a regular file)
    running build_ext
    Building extension for Python 3.8.5 (tags/v3.8.5:580fbb0,Jul 20 2020,15:57:54) [MSC v.1924 64 bit (AMD64)]
    Invoking CMake setup: 'cmake C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\build\lib.win-amd64-3.8 -DPYTHON_EXECUTABLE=c:\users\admin\appdata\local\programs\python\python38\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\build\lib.win-amd64-3.8 -A x64'
    -- Building for: NMake Makefiles
    CMake Error at CMakeLists.txt:5 (message):



      !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


      You must use Visual Studio to build a python extension on windows.  If you
      are getting this error it means you have not installed Visual C++.  Note
      that there are many flavors of Visual Studio,like Visual Studio for C#
      development.  You need to install Visual Studio for C++.


      !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!




    -- Configuring incomplete,errors occurred!
    Traceback (most recent call last):
      File "<string>",line 1,in <module>
      File "C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\setup.py",line 223,in <module>
        setup(
      File "c:\users\admin\appdata\local\programs\python\python38\lib\site-packages\setuptools\__init__.py",line 144,in setup
        return distutils.core.setup(**attrs)
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\core.py",line 148,in setup
        dist.run_commands()
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\dist.py",line 966,in run_commands
        self.run_command(cmd)
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\dist.py",line 985,in run_command
        cmd_obj.run()
      File "c:\users\admin\appdata\local\programs\python\python38\lib\site-packages\setuptools\command\install.py",line 61,in run
        return orig.install.run(self)
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\command\install.py",line 545,in run
        self.run_command('build')
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\cmd.py",line 313,in run_command
        self.distribution.run_command(command)
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\dist.py",in run_command
        cmd_obj.run()
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\command\build.py",line 135,in run
        self.run_command(cmd_name)
      File "c:\users\admin\appdata\local\programs\python\python38\lib\distutils\cmd.py",in run_command
        cmd_obj.run()
      File "C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\setup.py",in run
        self.build_extension(ext)
      File "C:\Users\Admin\AppData\Local\Temp\pip-install-fi__6w9v\dlib\setup.py",line 172,in build_extension
        subprocess.check_call(cmake_setup,cwd=build_folder)
      File "c:\users\admin\appdata\local\programs\python\python38\lib\subprocess.py",line 364,in check_call
        raise CalledProcessError(retcode,cmd)
    subprocess.CalledProcessError: Command '['cmake','C:\\Users\\Admin\\AppData\\Local\\Temp\\pip-install-fi__6w9v\\dlib\\tools\\python','-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\Admin\\AppData\\Local\\Temp\\pip-install-fi__6w9v\\dlib\\build\\lib.win-amd64-3.8','-DPYTHON_EXECUTABLE=c:\\users\\admin\\appdata\\local\\programs\\python\\python38\\python.exe','-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\Admin\\AppData\\Local\\Temp\\pip-install-fi__6w9v\\dlib\\build\\lib.win-amd64-3.8','-A','x64']' returned non-zero exit status 1.
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\admin\appdata\local\programs\python\python38\python.exe' -u -c 'import sys,'"'"'exec'"'"'))' install --record 'C:\Users\Admin\AppData\Local\Temp\pip-record-f5b3pskr\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\admin\appdata\local\programs\python\python38\Include\dlib' Check the logs for full command output.

解决方法

根据face_recognition包的文档，为了在Windows上成功安装face_recognition，需要安装MS Visual Studio C ++编译器和CMake以及Boost。（这是构建face_recognition所需的dlib依赖项）

在Github软件包中有完整的过程，其链接如下，其中包括：https://github.com/ageitgey/face_recognition/issues/175

答案很简单。您必须按照说的去做。转到VS安装程序，然后安装VS for C ++和C＃。原因是这些模块使用C代码，而在使用Visual Studio时，必须对其进行编译，以便可以编译C ++代码