python throws typeerror and tells you that str objects don' support item assignment if you want to alter stringthen you must create an entirely new string to change the string "goalto the string "foal"you can use string slice to concatenate the letter "fwith everything but the first letter of the word "goal"word "goalword "fword[ :word 'foalfirstyou assign the string "goalto the variable word then you concatenate the slice word[ :]which is the string "oal"with the letter "fto get the string "foalif you're getting different result herethen make sure you're including the colon character (:as part of the string slice review exercises you can nd the solutions to these exercises and many other bonus resources online at realpython com/python-basics/resources create string and print its length using len( create two stringsconcatenate themand print the resulting string create two stringsuse concatenation to add space between themand print the result print the string "zingby using slice notation to specify the correct range of characters in the string "bazinga