Strings in python

 Strings in python:

Simply put, a string is a sequence of characters. We use strings almost everywhere in Python code. Python supports both ASCII and Unicode strings. Let us explore strings in more detail. 

Single Quote - We can specify a string using single quotes such as 'Python is an easy programming language!'. All spaces and tabs within the quotes are preserved as-is. 

Double Quotes - We can also specify string using double quotes such as "Yes! Indeed, Python is easy.". Double quotes work the same way single quotes works. Either can be used. 

Triple Quotes - This is used as a delimiter to mark the start and end of a comment. example of triple quotes are '''hello! dear , Welcome to my city.'''

Strings are immutable - This means once we have created a string we cannot change it. 

Consider the following example. 

In []: month_name = 'Fanuary' 

In []: month_name[0] = 'J' 

 TypeError: 'str' object does not support item assignment 

Here, month_name is a variable that is used to hold the value Fanuary. Variables can be thought of as a container with a name that is used to hold the value. We will discuss variables in detail in the upcoming sections. 

In the above example, we initialize variable month_name with an incorrect month name Fanuary. Later, we try to correct it by replacing the letter F with J, where we have been presented with the TypeError telling us that strings do not support change operation.