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import string
from email.utils import parseaddr
from typing import Optional
from moto.moto_api._internal import mock_random as random
def random_hex(length: int) -> str:
return "".join(random.choice(string.ascii_lowercase) for x in range(length))
def get_random_message_id() -> str:
return f"{random_hex(16)}-{random_hex(8)}-{random_hex(4)}-{random_hex(4)}-{random_hex(4)}-{random_hex(12)}-{random_hex(6)}"
def is_valid_address(addr: str) -> Optional[str]:
_, address = parseaddr(addr)
address_parts = address.split("@")
if len(address_parts) != 2 or not address_parts[1]:
return "Missing domain"
return None
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