from transformers import AutoModelForSequenceClassification, AutoTokenizer
import torch

def load_model(model_path):
    """Load the trained model from the specified path."""
    model = AutoModelForSequenceClassification.from_pretrained(model_path)
    return model

def load_tokenizer(model_path):
    """Load the tokenizer from the specified path."""
    tokenizer = AutoTokenizer.from_pretrained(model_path)
    return tokenizer

def predict(model, tokenizer, text, device='cpu'):
    """Predict the class of the input text."""
    model.to(device)
    inputs = tokenizer(text, return_tensors='pt', padding=True, truncation=True)
    inputs = {key: value.to(device) for key, value in inputs.items()}
    with torch.no_grad():
        outputs = model(**inputs)
    logits = outputs.logits
    predicted_class = torch.argmax(logits, dim=-1).item()
    return predicted_class