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    				| 1. | What is the concept of immutable strings ? | 
| Answer» Strings are immutable means that the contents of string cannot be chrnged after it is created. For example : >>> str = ‘Meney’ >>> str [3] = ‘h’ Type Error : ‘str’ object not support item assignment Python does not allow to change a character in a string. So an attempt to replace ‘e’ in the string by ‘h’ displays a Type Error. | |