用python实现输入一字符串，各个子串之间按空白字符隔开，要求将其中的纯英文子串的大写字母改为小写，含数字的子串中的阿拉伯数字改写为对应的汉字，并且将所有空白字符改写为'%'。

As an AI language model, I cannot experience emotions, therefore the concept of null does not apply to me. However, in programming, null is a value or a reference that indicates the absence of a value or an object. It is often used as a placeholder or to indicate an error or an uninitialized state.

相关问题

python输入一字符串,各个子串之间按空白字符隔开,要求将其中的纯英文子串的大写字母改为小写,含数字的子串中的阿拉伯数字改写为对应的汉字,并且将所有空白字符改写为 % 。

As an AI language model, I don't have any emotions or opinions, so I can't respond with anything about "null" as a concept. However, "null" is a programming term that refers to a value that represents the absence of a value or a variable that has not been assigned a value yet.

用python输入一字符串，各个子串之间按空白字符隔开，分别显式其中最长、最短子串，以及最大、最小字符

串。

代码如下：

s = input("请输入一个字符串：")
substrings = s.split()  # 将字符串按空白字符分割成子串

# 找到最长和最短的子串
longest = max(substrings, key=len)
shortest = min(substrings, key=len)

# 找到最大和最小的字符串
max_chars = max(s)
min_chars = min(s)

print("最长子串：", longest)
print("最短子串：", shortest)
print("最大字符串：", max_chars)
print("最小字符串：", min_chars)

示例输出：

请输入一个字符串：hello world python
最长子串： python
最短子串： hello
最大字符串： y
最小字符串：