ImportError: MagickWand shared library not found. You probably had not installed ImageMagick library.

MagickWand-sucks.md

Wand==0.3.7, Python 3.4.3, OSX EI Capitan 10.11

when run from wand.image import Image it throw errors:

ImportError: MagickWand shared library not found. You probably had not installed ImageMagick library. Try to install: brew install freetype imagemagick

ok, first I try this:

brew install freetype imagemagick, but

Warning: freetype-2.6_1 already installed Warning: imagemagick-6.9.2-4 already installed

what's the fuck?

run convert -h

dyld: Library not loaded: /usr/local/lib/libfreetype.6.dylib Referenced from: /usr/local/bin/convert Reason: Incompatible library version: convert requires version 19.0.0 or later, but libfreetype.6.dylib provides version 16.0.0 Trace/BPT trap: 5

Ok, Incompatible library version, I got you!

So here is the final solutions for me.

1. brew uninstall freetype imagemagick
2. brew install freetype
3. brew link --overwrite freetype
4. brew install imagemagick

If setting export MAGICK_HOME=/opt/homebrew/opt/imagemagick didn't work, then re-open your terminal, run echo $MAGICK_HOME. If nothing shows up, here is what you can do:

1. Make it permanent
   • Open your shell profile .bash_profile (or .zshrc).
   • Add this line: export MAGICK_HOME=/opt/homebrew/opt/imagemagick.
   • Save and exit, then type source ~/.bash_profile (or .zshrc) to apply changes.
2. Quick Python fix
   If you need a quick fix in Python instead of permanently change your system variables, use this snippet:

   import os
   if not os.environ.get('MAGICK_HOME'):
       print("Setting MAGICK_HOME temporarily")
       os.environ['MAGICK_HOME'] = '/opt/homebrew/opt/imagemagick' # or imagemagick@6, imagemagick@7 whatever installed there

This Python code only sets MAGICK_HOME temporarily during the script runtime. For a permanent fix, update your shell profile as described above.