如何打印一行第N个单词的第N个字符？

def print_nth_character(line, n):
    words = line.split(" ")
    if len(words) >= n:
        nth_word = words[n-1]
        if len(nth_word) >= n:
            nth_character = nth_word[n-1]
            print(nth_character)
        else:
            print("第{}个单词的长度小于{}".format(n, n))
    else:
        print("行文本的单词数量小于{}".format(n))

# 示例用法
line = "Hello world, how are you today?"
n = 3
print_nth_character(line, n)