如何在python中将内容相同的单词视为一个单词？

def count_words(text):
    words = text.split()  # 将文本内容按照空格分割成单词列表
    word_dict = {}  # 创建空字典

    for word in words:
        if word in word_dict:
            word_dict[word] += 1
        else:
            word_dict[word] = 1

    for word, count in word_dict.items():
        print(f"{word}: {count}")

# 测试代码
text = "apple banana apple orange banana"
count_words(text)

apple: 2
banana: 2
orange: 1