def magic_tutorial(self,arg):
    tutorials_dict = {'image': tutorial_image, 'save': tutorial_save,
                     'camera': tutorial_camera, 'manipulation': tutorial_manipulation,
                     'copy': tutorial_copy, 'features': tutorial_features}


    if (arg is not ""):
        shellclear()
        print "+--------------------------------+"
        print " Welcome to the SimpleCV tutorial "
        print "+--------------------------------+"
        print lb
        print "At anytime on the SimpleCV Interactive Shell you can type tutorial,"
        print "then press the tab key and it will autocomplete any tutorial that"
        print "is currently available."
        print lb
        print "Let's start off with Loading and Saving images!"
        print lb
        print lb
        raw_input("[Press enter to continue]")
        tutorial_image()
        end_of_tutorial()
        return
    else:
        if arg in tutorials_dict:
            tutorials_dict[arg]()
        else:
            print "%s is not a tutorial!" % arg
dataset/ETHPy150Open sightmachine/SimpleCV/SimpleCV/Shell/Tutorial.py/magic_tutorial/operator `==` -> `is not`