7-9: must utilize a function pass - python programming

output: float 7. Write a function that creates a file with a specific name(input), writes your name to the file, reads back from the file, then deletes the file. The function should return what is written in the file. input: string outputs: string 8. Write a function that counts the number of occurrence of a spe- cific character in a string. input: string, char output: int 9. Write a function to get the Python version you are using. input: None output: string 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