George Rolfe

import os, sys

def _locate_houdini():    
    import os
    from _winreg import ConnectRegistry, OpenKey, CloseKey, EnumKey, EnumValue, QueryValue, HKEY_LOCAL_MACHINE

    install_path = None
    abort = False
    while install_path is None and not abort:
        try:
            registry = ConnectRegistry(None, HKEY_LOCAL_MACHINE)
            key_path = 'SOFTWARE\\Side Effects Software\\'
            key = OpenKey(registry, key_path)
            i = 0
            while install_path is None:
                sub_key = EnumKey(key, i)
                i += 1
                if sub_key == 'Houdini' or sub_key == 'Houdini Engine':
                    sub_key = OpenKey(key, sub_key)
                    install_path = EnumValue(sub_key, 0)[1]
                    if not os.path.exists(install_path):
                        install_path = None
                    CloseKey(sub_key)
            CloseKey(key)
        except:
            pass

    return install_path

def _locate_hython():
    houdini_path = _locate_houdini()
    hython_path = houdini_path + 'bin\\hython2.7.exe'
    assert os.path.exists(hython_path), 'hython not found!'
    return hython_path

def _bootstrap(argv):
    import subprocess
    hython_path = _locate_hython()
    subprocess.call([hython_path, __file__] + argv)

# We're running in hython
def execute(argv):
    import hou
    print 'hello in hython'
    print argv

def main(argv):
    try:
        import hou
        execute(argv)
    except:
        _bootstrap(argv)

if __name__ == '__main__':
    main(sys.argv[1:])