String

In python string is type(class) that is a sequence of character enclosed in double quotes(" "). It is immutable i.e. a string cannot be changed. A string is a data type used in programming, such as an integer and floating point unit, but is used to represent text rather than numbers. It is comprised of a set of characters that can also contain spaces and numbers. For example, the word "hamburger" and the phrase "I ate 3 hamburgers" are both strings. Even "12345" could be considered a string, if specified correctly. Typically, programmers must enclose strings in quotation marks for the data to recognized as a string and not a number or variable name.

Index operator in String

: , [ ]

The above two operator are prime operator for string indexing. String indexing is a process by which string members can be accessed by specifying the respective position of members by the index.This is specifying of index by positive integer.

Function of string in Python