help me using python..

2. Write a program that reads a string as an input from the user. Replace the appropriate characters in the string using the following rules. Then, display the result as your output. (a) The first character in the string should be capitalised. (b) "" should be replaced with "I, if it is both preceded and followed by a space. (c) The first non-space character after a ".", "?" or "?" should be capitalised. [7 marks] Sample output: Enter a string: what time do i have to be there? what's the address? It is capitalised as: What time do I have to be there? What's the address