import subprocess

try:
    my_env = {}
    my_env["DYLD_LIBRARY_PATH"] = "/Users/acreskey/.mozbuild/browsertime/ImageMagick-7.0.8/lib"
    my_env["PATH"] = "/Users/acreskey/.mozbuild/browsertime/ImageMagick-7.0.8/bin"
    print(my_env)
    out = subprocess.check_output('compare', stderr=subprocess.STDOUT, env=my_env, shell=True)
except BaseException as e:
    print(e.output)