ports + adapters example.

gistfile1.txt

/ports
    /communication
        /email
            /interface.py
```python
import abc

class EmailSenderAdapterInterface(abc.ABC):

    @abc.abstractmethod
    def send_email(self, destination_email, subject, message, attachment=None):
        ...
```
            /main.py
```python
from botoapp.adapters.communication.email.aws_ses.main import AwsSesSender

class EmailSender:
    def __init__(self, adapter=None):
        """Set a default adapter for ease of use. It could later be overriden.
        """
        self._adapter = AwsSesSender() if adapter is None else adapter

    def send_email(self, destination_email, subject, message, attachment=None):
        self._adapter.send_email(destination_email, subject, message, attachment)

```

/adapters
 /communication
  /email
    /aws_ses.py
```python
from aws import ses
from ports.communication.email.interface import EmailSenderAdapterInterface

class AwsSesSender(EmailSenderAdapterInterface:
    def send_email(self, destination_email, subject, message, attachment=None):
        ses.send()

    def _service_account_login(self):
        pass

    def _create_email(self):
        pass

    def _create_email_with_attachment(self):
        pass
```


/blocks.py
```python
from ports.communication.email.main import EmailSender

def block_12(arg1, arg2):
    #...
    sender = EmailSender()
    sender.send_email(destination_email, subject, message, attachment)
    #...

```