Failed to find TIFF library

ImportError: Failed to find TIFF library. Make sure that libtiff is installed and its location is listed in PATH|LD_LIBRARY_PATH|..

解决方法：
I have actually experienced the same problem as elktoe when I tried to install libtiff on my current Mac workstation, this can be solved perfectly with mac compiled libtiff with brew. Make sure you get rid of the previous not working libtiff module before you install mac compiled libtiff
pip3 uninstall libtiff
then
brew install libtiff as suggested by @lsqshr, see if it works.