如何计算多行单词的实例数？

def count_word_instances(text):
    words = text.split()  # 拆分文本为单词列表
    word_count = {}  # 创建空字典

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

    return word_count

text = """
This is a sample text.
It contains multiple lines.
Each line has words.
"""

result = count_word_instances(text)
print(result)

{'This': 1, 'is': 1, 'a': 1, 'sample': 1, 'text.': 1, 'It': 1, 'contains': 1, 'multiple': 1, 'lines.': 1, 'Each': 1, 'line': 1, 'has': 1, 'words.': 1}