i need help with these 3 different python codes?

Last 10 Characters Write code that prints the last 10 characters of a string stored in the variable my_string. Assume that my string has already been given a value and that it is at least 10 characters long. Ideas and Thoughts Write code that prints a string made up of the string stored in the variable sentence with all instances of the word 'idea' replaced with the word thought'. Assume the sentence variable has already been initialized. Back to Front Write code that constructs a string made by flipping the front and back halves of a string stored in a variable named flip_me. For example, if flip me is "bookmark', the resulting string is 'markbook'. Store the result in a variable named flipped. Assume that the variable flip me has already been given a value and that it contains an even number of characters