将数字转换为word函数python

def number_to_word(num):
    # 定义数字对应的单词
    words = {
        0: 'zero',
        1: 'one',
        2: 'two',
        3: 'three',
        4: 'four',
        5: 'five',
        6: 'six',
        7: 'seven',
        8: 'eight',
        9: 'nine'
    }
    
    # 将数字转换为字符串
    num_str = str(num)
    
    # 初始化结果字符串
    result = ''
    
    # 遍历每个数字字符
    for digit in num_str:
        # 将数字字符转换为对应的单词并拼接到结果字符串中
        result += words[int(digit)] + ' '
    
    # 返回结果字符串
    return result.strip()

# 示例用法
print(number_to_word(123))  # 输出：one two three
print(number_to_word(456))  # 输出：four five six