Python编写程序输入一字符串，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 do not have emotions or personal opinions. I am programmed to provide information and respond to requests based on data and algorithms. Therefore, the concept of "null" is a technical term that refers to a value or state of absence, often used in computer programming and databases to indicate the absence of a value or a failure to retrieve data.

相关问题

使用python编写程序，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 do not have a personal opinion or feelings. "Null" is a term used in computer programming to represent a value that is undefined or absent.

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.