我編寫了一個模塊，它獲取目錄中的所有 TIFF 圖像，對每個圖像文件中的所有幀進行平均，并將平均圖像保存到由以下指定的自動生成的子目錄中outputPath：def average_tiff_frames(inputPath):    '''    This function opens all TIFF image files in a directory, averages over all frames within each TIFF file,    and saves the averaged images to a subdirectory.        Parameters    ----------    inputPath : string        Absolute path to the raw TIFF files    '''    import datetime    import os        import numpy as np    from PIL import Image            # Read image file names, create output folder    while True:        try:            inputPath = os.path.join(inputPath, '')    # Add trailing slash or backslash to the input path if missing            filenames = [filename for filename in os.listdir(inputPath)                            if filename.endswith(('.tif', '.TIF', '.tiff', '.TIFF'))                            and not filename.endswith(('_avg.tif'))]            outputPath = os.path.join(inputPath, datetime.datetime.now().strftime('%Y%m%dT%H%M%S'), '')            os.mkdir(outputPath)            break        except FileNotFoundError:            print('TIFF file not found - or - frames in TIFF file already averaged (file name ends with "_avg.tif")')    # Open image files, average over all frames, save averaged image files    for filename in filenames:        img = Image.open(inputPath + filename)        width, height = img.size        NFrames = img.n_frames        imgArray = np.zeros((height, width))    # Ordering of axes: img.size returns (width, height), np.zeros takes (rows, columns)        for i in range(NFrames):            img.seek(i)            imgArray += np.array(img)            i += 1        imgArrayAverage = imgArray / NFrames        imgAverage = Image.fromarray(imgArrayAverage)        imgAverage.save(outputPath + filename.rsplit('.')[0] + '_avg' + '.tif')        img.close()    return outputPath這里有什么問題嗎？我的第一個想法是，它outputPath是循環本地的while True: try，并且在 后被破壞break，所以我outputPath = ''在循環之前實例化了一個空字符串，但這沒有幫助。