0929-unique-email-addresses.py

class Solution:
    def numUniqueEmails(self, emails: list[str]) -> int:
        unique_emails: set[str] = set()
        for email in emails:
            local_name, domain_name = email.split('@')
            local_name = local_name.split('+')[0]
            local_name = local_name.replace('.', '')
            email = local_name + '@' + domain_name
            unique_emails.add(email)
        return len(unique_emails)