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Thank you for sharing this Dev2, nicely written article. you can add this: Slicing with positive and negative index Code: s = "Welcome to scaler" s1 = s[ 3 : - 7 ] print ( "positive start index, negative end index:" , s 1 ) # above slice operation can also be written as s2 = s[- 14 : 10 ] print ( "negative start index, positive end index:" , s 2 ) Output: positive start index , negative end index : come to negative start index , positive end index : come to Check this String Slicing in Python article on Scaler Topics .