I tried to execute this
! pip install zbar
The error message is
Collecting zbar
Using cached .../zbar-0.10.tar.bz2
Building wheels for collected packages: zbar
Running setup.py bdist_wheel for zbar ... error
Complete output from command /...:
...
gcc ...
In file included from zbarmodule.c:24:0:
zbarmodule.h:26:18: fatal error: zbar.h: No such file or directory
#include <zbar.h>
^
compilation terminated.
Looks like an include file is missing. Any idea?