python string

A string in Python is a sequence of characters enclosed in quotation marks. Python allows the use of single quotes (' ') or double quotes (" ") to represent strings. For example:

my_string = "Hello, World!"

In this example, the string "Hello, World!" is assigned to the variable my_string.

Strings in Python are immutable, which means that once a string is created, its contents cannot be changed. However, new strings can be created from existing ones by using various string manipulation methods. Some common string operations include concatenation, slicing, and formatting.

Concatenation allows you to join two or more strings together:

string1 = "Hello, " string2 = "World!" my_string = string1 + string2

The resulting string in my_string would be "Hello, World!".

Slicing can be used to retrieve a portion of a string:

my_string = "Hello, World!" substring = my_string[0:5]

The resulting substring would be "Hello".

Formatting allows you to insert values into a string using placeholders:

name = "John" age = 30 my_string = "My name is {} and I am {} years old.".format(name, age)

The resulting string in my_string would be "My name is John and I am 30 years old."