python中face_recognition模块期间的未知错误

Question

i am not able to install face_recognition module

whenever I try to install the face recognition module I get this unknown error, I have already updated the Cmake and pip to the latest version but still, this error shows. It's like:

subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\Ashish\\AppData\\Local\\Temp\\pip-install-9szfcst7\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\Ashish\\AppData\\Local\\Temp\\pip-install-9szfcst7\\dlib\\build\\lib.win32-3.7', '-DPYTHON_EXECUTABLE=c:\\users\\ashish\\appdata\\local\\programs\\python\\python37-32\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\Ashish\\AppData\\Local\\Temp\\pip-install-9szfcst7\\dlib\\build\\lib.win32-3.7']' returned non-zero exit status 1.

----------------------------------------

Command "c:\\users\\ashish\\appdata\\local\\programs\\python\\python37-32\\python.exe -u -c "import setuptools, tokenize; file ='C:\\Users\\Ashish\\AppData\\Local\\Temp\\pip-install-9szfcst7\\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\\Ashish\\AppData\\Local\\Temp\\pip-record-psz1uqhy\\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\\Users\\Ashish\\AppData\\Local\\Temp\\pip-install-9szfcst7\\dlib\\

Answer 1

workaround

Assuming you are using Anaconda3 (based on the screenshot) and since the dependency of face_recognition that need to be compiled is named dlib and is available on conda-forge , I suggest you try the following:

(1) Open Annaconda terminal

(2) Add conda forge channel

conda config --add channels conda-forge

(3) Create and activate a new environment

conda create -n my_experiments
conda activate my_experiments

(4) install dlib

conda install dlib

(5) install other dependencies of face_recognition that are available on conda

conda install click numpy pillow

(6) install the models. Since they are not available on conda, the following should do it:

pip install face_recognition_models

(7) Last, since face_recognition is only composed of python script but not available on conda, you can then try this:

pip install face_recognition --no-deps

the proper fix

Python wheels for both dlib and face_recognition should be made available.

A python wheel is package that contain python and also pre-compiled library code. This allows the user to easily install the package.

The latest release of dlib doesn't have any wheels available: https://pypi.org/project/dlib/19.15.0/#files

I will follow up and report an issue to the maintainer of dlib.