import dlib ImportError：Ubuntu 18.04 中没有名为 dlib 的模块

Question

I am using.php file and calling one python file though Symfony Components which contains dlib and cv2. This python file works fine in terminal but calling from php file. It give an error.

Code

$process = Process::fromShellCommandline('python /home/machine/openface/demos/compare_two_pic.py {/home/machine/openface/demos/images/orange.jpg,/home/machine/openface/demos/images/orange.jpg}');

$process->run();

echo "here".$process->getOutput();

// executes after the command finishes
        if (!$process->isSuccessful()) {
            throw new ProcessFailedException($process);
        }

        echo $process->getOutput();

Error Output:

Traceback (most recent call last):

File "/home/machine/openface/demos/compare_two_pic.py", 
line 12, in <module>
import dlib
ImportError: No module named dlib

Answer 1

In order to install dlib for python3 it's better to use pip:

pip install dlib

You will need boost python. To get it:

sudo apt-get install libboost-all-dev

If you have "Could NOT find PythonLibs (missing: PYTHON_LIBRARIES) (Required is at least version "3.4")" error make sure you have cmake > 2.8 (In my case it is 3.2.2). To install cmake > 2.8:

sudo add-apt-repository ppa:george-edison55/cmake-3.x
sudo apt-get update
sudo apt-get install cmake

That solved the issue for me.