input: Write a python function to create a dictionary mapping emails to passwords using names and passwords from a list of tuples. 
  assert create_email_password_dict([("Alice", "password123"), ("Bob", "qwerty456")]) == {'alice@example.com': 'password123', 'bob@example.com': 'qwerty456'}
  assert create_email_password_dict([("Charlie", "abcd1234"), ("Dave", "passw0rd")]) == {'charlie@example.com': 'abcd1234', 'dave@example.com': 'passw0rd'}
  assert create_email_password_dict([("Eve", "123456"), ("Frank", "654321")]) == {'eve@example.com': '123456', 'frank@example.com': '654321'}
output: def create_email_password_dict(name_password_list):
      email_password_dict = {}
      for name, password in name_password_list:
          email = f"{name.lower()}@example.com"
          email_password_dict[email] = password
      return email_password_dict