inference_log.py

import traceback
from pathlib import Path

log_path = Path('inference_log.txt')
with log_path.open('w', encoding='utf-8') as f:
    def log(*args, **kwargs):
        print(*args, file=f, **kwargs)
        f.flush()

    try:
        log('Starting inference log')
        import tensorflow as tf
        import numpy as np
        from PIL import Image

        model_path = 'saved_model_age_regressor'
        img_path = Path('data/UTKFace/53_1_1_20170110122449716.jpg.chip.jpg')

        log('Model path:', model_path)
        log('Image path:', str(img_path))

        log('Attempting to load model with compile=False...')
        m = tf.keras.models.load_model(model_path, compile=False)
        log('Loaded model type:', type(m))

        try:
            m.summary(print_fn=lambda *a, **k: log(*a, **k))
        except Exception as e:
            log('model.summary failed:', e)

        img = Image.open(img_path).convert('RGB').resize((224,224))
        arr = np.array(img, dtype=np.float32)/255.0
        x = np.expand_dims(arr, 0)
        log('Input shape:', x.shape)

        log('Running predict...')
        pred = m.predict(x)
        log('Raw prediction output:', pred, 'shape:', getattr(pred, 'shape', None))
        try:
            log('Predicted age:', float(pred.flatten()[0]))
        except Exception as e:
            log('Error converting prediction to float:', e)

        log('Inference finished successfully')
    except Exception:
        traceback.print_exc(file=f)
        log('Inference script caught exception')