Computer Science

Write Python class that takes a string and returns with a valid phone number.

Number format is ten-digit numbers consisting of a three-digit area code and a seven-digit number.

Clean up different telephone numbers by removing punctuation, and removing incorrect format and the country code (1).

You should throw a ValueError with a string if there are too many or too few digits, or the wrong digits.

For example, the strings: +1 (617) 111-0000, 617-111-0000, 1 617 111 0000, 617.111.0000 should end up with (617) 111-0000

Sample and incomplete starting code:

_{class Phone:}

_{def __init__(self, raw):}

_{self.number = self._normalize(raw)}

_{def __str__(self) -> str:}

_{def area_code(self) -> str:}

_{def _normalize(self, raw: str) -> str:}

_{Throws a ValueError Exception}