python - 如何使用Python从字符串中删除字符(How to delete a character from a string using Python)

Question

There is a string, for example.

(例如，有一个字符串。)

EXAMPLE .

(EXAMPLE 。)

How can I remove the middle character, ie, M from it?

(如何从中删除中间字符（即M ？)

I don't need the code.

(我不需要代码。)

I want to know:

(我想知道：)

• Do strings in Python end in any special character?

  (Python中的字符串是否以任何特殊字符结尾？)

• Which is a better way - shifting everything right to left starting from the middle character OR creation of a new string and not copying the middle character?

  (哪种更好的方法-从中间字符开始或从创建新字符串开始，将所有内容从右移到左，而不是复制中间字符？)

  ask by Lazer translate from so

Answer 1

In Python, strings are immutable, so you have to create a new string.

(在Python中，字符串是不可变的，因此您必须创建一个新字符串。)

You have a few options of how to create the new string.

(您有一些有关如何创建新字符串的选项。)

If you want to remove the 'M' wherever it appears:

(如果要删除出现的“ M”，请执行以下操作：)

newstr = oldstr.replace("M", "")

If you want to remove the central character:

(如果要删除中心字符：)

midlen = len(oldstr)/2   # //2 in python 3
newstr = oldstr[:midlen] + oldstr[midlen+1:]

You asked if strings end with a special character.

(您询问字符串是否以特殊字符结尾。)

No, you are thinking like a C programmer.

(不，您在想像C程序员。)

In Python, strings are stored with their length, so any byte value, including \0 , can appear in a string.

(在Python中，字符串按长度存储，因此任何字节值（包括\0 ）都可以出现在字符串中。)