{"record":{"id":"6e89d2a5a8d9d47a","repo":"geekcomputers/Python","slug":"the-parameter-fp-should-be-a-sequence-containing-t","errorCode":null,"errorMessage":"The parameter fp should be a sequence containing the path of the images of the tube body and the tube mouth.","messagePattern":"The parameter fp should be a sequence containing the path of the images of the tube body and the tube mouth\\.","errorType":"exception","errorClass":"TypeError","httpStatus":null,"severity":"error","filePath":"Flappy Bird - created with tkinter/Tubes.py","lineNumber":34,"sourceCode":"    __move = 10\n    __pastTubes = []\n\n    def __init__(\n        self,\n        background,\n        bird,\n        score_function=None,\n        *screen_geometry,\n        fp=(\"tube.png\", \"tube_mourth\"),\n        animation_speed=50,\n    ):\n        # Verifica os parâmetros passados e lança um erro caso algo esteja incorreto\n        if not isinstance(background, Background):\n            raise TypeError(\n                \"The background argument must be an instance of Background.\"\n            )\n        if not len(fp) == 2:\n            raise TypeError(\n                \"The parameter fp should be a sequence containing the path of the images of the tube body and the tube mouth.\"\n            )\n        if not isinstance(bird, Bird):\n            raise TypeError(\"The birdargument must be an instance of Bird.\")\n        if not callable(score_function):\n            raise TypeError(\"The score_function argument must be a callable object.\")\n\n        Thread.__init__(self)\n\n        # Instância os parâmetros\n        self.__background = background\n        self.image_path = fp\n        self.__animation_speed = animation_speed\n        self.__score_method = score_function\n\n        # Recebe a largura e altura do background\n        self.__width = screen_geometry[0]\n        self.__height = screen_geometry[1]","sourceCodeStart":16,"sourceCodeEnd":52,"githubUrl":"https://github.com/geekcomputers/Python/blob/40f4cd2652d75ef8e49d76e5c4d431d458712719/Flappy Bird - created with tkinter/Tubes.py#L16-L52","documentation":"Tubes' constructor requires fp to be a sequence of exactly two image paths: the tube body image and the tube mouth image. If len(fp) != 2 a TypeError is raised because the sprite drawing code indexes both parts.","triggerScenarios":"Passing a single image path string, a 3-element tuple, or the default partially overridden (e.g. fp=('tube.png',)) so len(fp) != 2. Note a plain string of length 2 also accidentally passes this check.","commonSituations":"Overriding the default fp with only one image; changing art assets and forgetting the mouth texture; passing a path string whose length happens to differ from 2 (string length, not element count, is checked for str inputs).","solutions":["Pass a 2-tuple/list: fp=('tube_body.png', 'tube_mouth.png')","If you have one image, duplicate it: fp=('tube.png', 'tube.png')","Ensure both image files exist and paths are correct"],"exampleFix":"# before\ntubes = Tubes(bg, bird, score_fn, fp=('tube.png',))\n# after\ntubes = Tubes(bg, bird, score_fn, fp=('tube.png', 'tube_mouth.png'))","handlingStrategy":"validation","validationCode":"fp = tuple(fp) if hasattr(fp, '__iter__') else (fp, fp)\nassert len(fp) == 2, 'fp must be (body_image, mouth_image)'","typeGuard":"def is_valid_fp(fp) -> bool:\n    return hasattr(fp, '__len__') and not isinstance(fp, str) and len(fp) == 2","tryCatchPattern":"try:\n    tubes = Tubes(bg, bird, fn, fp=images)\nexcept TypeError as e:\n    print('fp validation failed:', e)","preventionTips":["Always pass a 2-element tuple of image paths","Remember a plain string is measured by character length here","Keep body and mouth textures paired in config"],"tags":["tkinter","typeerror","asset-validation","flappy-bird"],"backgroundTag":"wrong-argument-shape","analyzedSha":"40f4cd2652d75ef8e49d76e5c4d431d458712719","analyzedAt":"2026-08-27T11:12:20.313Z","schemaVersion":2},"datasetVersion":"2026-08-27T13:17:12.746Z"}