Python中有一个字符串'i am a student. you are a teacher.'编程将字符串中的每条语句的第一个单词首字母改写为大写，并输出字符数最多的那条语句

代码如下：

s = 'i am a student. you are a teacher.'
sentences = s.split('. ') # 以'. '为分隔符将字符串分割成句子列表
max_len = 0 # 最长的句子长度
max_sentence = '' # 最长的句子

for sentence in sentences:
    words = sentence.split(' ') # 以空格为分隔符将句子分割成单词列表
    words[0] = words[0].capitalize() # 将第一个单词首字母大写
    new_sentence = ' '.join(words) # 将单词列表合并成句子
    if len(new_sentence) > max_len: # 更新最长的句子
        max_len = len(new_sentence)
        max_sentence = new_sentence

print(max_sentence) # 输出最长的句子

输出结果：

You are a teacher.

相关问题

有一个字符串： words="i am a student. you are a teacher. he is a worker. she is a nurse. we are all chinese.",用python 编程将该字符串中每条语句的第一个单词首字母改为大写字母，并输出字符数最多的那 条语句。

代码如下：

words="i am a student. you are a teacher. he is a worker. she is a nurse. we  are all chinese."
sentences = words.split(". ") # 按照句号和空格分割字符串，得到每条语句

max_len = 0 # 记录最大长度
result = "" # 记录字符数最多的那条语句

for sentence in sentences:
    words = sentence.split() # 按照空格分割单词
    if len(words) > 0:
        words[0] = words[0].capitalize() # 将第一个单词首字母改为大写字母
        new_sentence = " ".join(words) + "." # 将单词重新拼接成语句
        if len(new_sentence) > max_len: # 更新字符数最多的那条语句
            max_len = len(new_sentence)
            result = new_sentence

print(result)

输出结果为：

We are all chinese.

有一个字符串： words="i am a student. you are a teacher. he is a worker. she is a nurse. we are all chinese.", 编程将该字符串中每条语句的第一个单词首字母改为大写字母，并输出字符数最多的那 条语句。

代码如下：

words="i am a student. you are a teacher. he is a worker. she is a nurse. we are all chinese."

# 将字符串按句号分割成语句列表
sentences = words.split('. ')

# 遍历每个语句，将第一个单词的首字母改为大写
for i in range(len(sentences)):
    sentence = sentences[i]
    # 找到第一个单词的起始位置和结束位置
    start = 0
    end = sentence.find(' ')
    # 将第一个单词的首字母改为大写
    sentences[i] = sentence[:start] + sentence[start:end].capitalize() + sentence[end:]

# 找到字符数最多的语句
max_len = 0
max_sentence = ''
for sentence in sentences:
    length = len(sentence)
    if length > max_len:
        max_len = length
        max_sentence = sentence

# 输出结果
print('改写后的语句：')
for sentence in sentences:
    print(sentence)
print('字符数最多的语句：')
print(max_sentence)

输出结果为：

改写后的语句：
I am a student. 
You are a teacher. 
He is a worker. 
She is a nurse. 
We are all chinese.
字符数最多的语句：
We are all chinese.