8. Write a function that counts the number of occurrence of a specific character in a string. input: str, str output: int 9. Write a function to get the Python version you are using. input: None Type output: str 10. Write a function that will take in a list of email addresses and return the domain and extension of each. If there are multiple emails with the same domain and extension, do not duplicate in your list. For example, if the emails passed are: ['testOne@gmail.com', 'testTwo@gmail.com', 'testThree@yahoo.com'] then your function should just return: ['gmail.com', 'yahoo.com'] input: list output: list