Prints a list of valid marker types for scatter()

    Returns:
        None

def markers():
    ''' Prints a list of valid marker types for scatter()

    Returns:
        None
    '''
    print("Available markers: \n\n - " + "\n - ".join(list(MarkerType)))
    print()
    print("Shortcuts: \n\n" + "\n".join(" %r: %s" % item for item in _MARKER_SHORTCUTS.items()))