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1，python3 pip install dlib报错:

Collecting dlib  Downloading https://files.pythonhosted.org/packages/05/57/e8a8caa3c89a27f80bc78da39c423e2553f482a3705adc619176a3a24b36/dlib-19.17.0.tar.gz (3.4MB)     |████████████████████████████████| 3.4MB 14kB/sBuilding wheels for collected packages: dlib  Building wheel for dlib (setup.py) ... error  ERROR: Complete output from command 'f:\python36\python.exe' -u -c 'import setuptools, tokenize;__file__='"'"'C:\\Users\\fu\\AppData\\Local\\Temp\\pip-install-t50q34ym\\dlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\fu\AppData\Local\Temp\pip-wheel-g2i4oztb' --python-tag cp36:  ERROR: running bdist_wheel  running build  running build_py  package init file 'dlib\__init__.py' not found (or not a regular file)  running build_ext  Traceback (most recent call last):    File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 120, in get_cmake_version      out = subprocess.check_output(['cmake', '--version'])    File "f:\python36\lib\subprocess.py", line 356, in check_output      **kwargs).stdout    File "f:\python36\lib\subprocess.py", line 423, in run      with Popen(*popenargs, **kwargs) as process:    File "f:\python36\lib\subprocess.py", line 729, in __init__      restore_signals, start_new_session)    File "f:\python36\lib\subprocess.py", line 1017, in _execute_child      startupinfo)  FileNotFoundError: [WinError 2] 系统找不到指定的文件。  During handling of the above exception, another exception occurred:  Traceback (most recent call last):    File "
   
    ", line 1, in 
    
         File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 261, in 
     
            'Topic :: Software Development',    File "f:\python36\lib\site-packages\setuptools\__init__.py", line 143, in setup      return distutils.core.setup(**attrs)    File "f:\python36\lib\distutils\core.py", line 148, in setup      dist.run_commands()    File "f:\python36\lib\distutils\dist.py", line 955, in run_commands      self.run_command(cmd)    File "f:\python36\lib\distutils\dist.py", line 974, in run_command      cmd_obj.run()    File "f:\python36\lib\site-packages\wheel\bdist_wheel.py", line 192, in run      self.run_command('build')    File "f:\python36\lib\distutils\cmd.py", line 313, in run_command      self.distribution.run_command(command)    File "f:\python36\lib\distutils\dist.py", line 974, in run_command      cmd_obj.run()    File "f:\python36\lib\distutils\command\build.py", line 135, in run      self.run_command(cmd_name)    File "f:\python36\lib\distutils\cmd.py", line 313, in run_command      self.distribution.run_command(command)    File "f:\python36\lib\distutils\dist.py", line 974, in run_command      cmd_obj.run()    File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 129, in run      cmake_version = self.get_cmake_version()    File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 125, in get_cmake_version      "\n*******************************************************************\n")  RuntimeError:  *******************************************************************   CMake must be installed to build the following extensions: dlib  *******************************************************************  ----------------------------------------  ERROR: Failed building wheel for dlib  Running setup.py clean for dlibFailed to build dlibInstalling collected packages: dlib  Running setup.py install for dlib ... error    ERROR: Complete output from command 'f:\python36\python.exe' -u -c 'import setuptools, tokenize;__file__='"'"'C:\\Users\\fu\\AppData\\Local\\Temp\\pip-install-t50q34ym\\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\fu\AppData\Local\Temp\pip-record-4kwg7hfv\install-record.txt' --single-version-externally-managed --compile:    ERROR: running install    running build    running build_py    package init file 'dlib\__init__.py' not found (or not a regular file)    running build_ext    Traceback (most recent call last):      File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 120, in get_cmake_version        out = subprocess.check_output(['cmake', '--version'])      File "f:\python36\lib\subprocess.py", line 356, in check_output        **kwargs).stdout      File "f:\python36\lib\subprocess.py", line 423, in run        with Popen(*popenargs, **kwargs) as process:      File "f:\python36\lib\subprocess.py", line 729, in __init__        restore_signals, start_new_session)      File "f:\python36\lib\subprocess.py", line 1017, in _execute_child        startupinfo)    FileNotFoundError: [WinError 2] 系统找不到指定的文件。    During handling of the above exception, another exception occurred:    Traceback (most recent call last):      File "
      
       ", line 1, in 
       
              File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 261, in 
        
          'Topic :: Software Development', File "f:\python36\lib\site-packages\setuptools\__init__.py", line 143, in setup return distutils.core.setup(**attrs) File "f:\python36\lib\distutils\core.py", line 148, in setup dist.run_commands() File "f:\python36\lib\distutils\dist.py", line 955, in run_commands self.run_command(cmd) File "f:\python36\lib\distutils\dist.py", line 974, in run_command cmd_obj.run() File "f:\python36\lib\site-packages\setuptools\command\install.py", line 61, in run return orig.install.run(self) File "f:\python36\lib\distutils\command\install.py", line 545, in run self.run_command('build') File "f:\python36\lib\distutils\cmd.py", line 313, in run_command self.distribution.run_command(command) File "f:\python36\lib\distutils\dist.py", line 974, in run_command cmd_obj.run() File "f:\python36\lib\distutils\command\build.py", line 135, in run self.run_command(cmd_name) File "f:\python36\lib\distutils\cmd.py", line 313, in run_command self.distribution.run_command(command) File "f:\python36\lib\distutils\dist.py", line 974, in run_command cmd_obj.run() File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 129, in run cmake_version = self.get_cmake_version() File "C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\setup.py", line 125, in get_cmake_version "\n*******************************************************************\n") RuntimeError: ******************************************************************* CMake must be installed to build the following extensions: dlib ******************************************************************* ----------------------------------------ERROR: Command "'f:\python36\python.exe' -u -c 'import setuptools, tokenize;__file__='"'"'C:\\Users\\fu\\AppData\\Local\\Temp\\pip-install-t50q34ym\\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\fu\AppData\Local\Temp\pip-record-4kwg7hfv\install-record.txt' --single-version-externally-managed --compile" failed with error code 1 in C:\Users\fu\AppData\Local\Temp\pip-install-t50q34ym\dlib\WARNING: You are using pip version 19.1, however version 19.1.1 is available.You should consider upgrading via the 'python -m pip install --upgrade pip' command.
        
       
      
     
    
   

安装dlib前需要先安装cmake 和boost。然后才能正确安装dlib

pip install boostpip install cmakepip install dlib

有时候安装dlib会出现一长串错误，有可能是版本问题

pip install dlib==19.6.1

最后测试，安装成功。

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