classify函数的python代码和测试

以下是一个简单的 `classify` 函数的Python代码和测试:

def classify(text):
    positive_words = ['good', 'awesome', 'fantastic', 'amazing', 'love']
    negative_words = ['bad', 'terrible', 'horrible', 'awful', 'hate']
    
    # Count the number of positive and negative words in the text
    num_pos_words = sum(1 for word in text.split() if word in positive_words)
    num_neg_words = sum(1 for word in text.split() if word in negative_words)
    
    # Classify the text based on the ratio of positive to negative words
    if num_pos_words > num_neg_words:
        return 'Positive'
    elif num_pos_words < num_neg_words:
        return 'Negative'
    else:
        return 'Neutral'

测试代码：

assert classify("I love this product!") == 'Positive'
assert classify("This is terrible!") == 'Negative'
assert classify("I'm feeling neutral about this.") == 'Neutral'