Module moex.meta

Classes

class AbstractHandler

Abstract class for handlers

Expand source code

class AbstractHandler(metaclass=ABCMeta):
    """Abstract class for handlers
    """
    def __repr__(self):
        """Return handler representation

        Returns
        -------
        str
            Handler's representation
        """
        return f"{self}(EXTENSION='{self.EXTENSION}', MIME='{self.MIME}')"

    def __str__(self):
        """Str method

        Returns
        -------
        str
            String representation
        """
        return self.__class__.__name__

    @abstractmethod
    async def execute(self, session, url, **params):
        """Make async request

        Parameters
        ----------
        session : aiohttp.ClientSession
            Client session
        url : str
            Requested url

        Raises
        ------
        NotImplementedError
            Must overrided in nested class
        """
        raise NotImplementedError()

    def prepare_url(self, url):
        """Add extension to url

        Parameters
        ----------
        url : str
            Url

        Returns
        -------
        str
            Url with extension
        """
        return f"{url}{self.EXTENSION}"

    def valid_response(self, resp):
        """Check reponse's validity by mime

        Parameters
        ----------
        resp : aiohttp.client_reqrep.ClientResponse
            Response

        Returns
        -------
        bool
            Is valid response
        """
        return True if resp.content_type == self.MIME else False

Subclasses

• CSVHandler
• HTMLHandler
• JSONHandler
• XMLHandler

Methods

async def execute(self, session, url, **params)

Make async request

Parameters

session : aiohttp.ClientSession

Client session

url : str

Requested url

Raises

NotImplementedError

Must overrided in nested class

Expand source code

@abstractmethod
async def execute(self, session, url, **params):
    """Make async request

    Parameters
    ----------
    session : aiohttp.ClientSession
        Client session
    url : str
        Requested url

    Raises
    ------
    NotImplementedError
        Must overrided in nested class
    """
    raise NotImplementedError()

def prepare_url(self, url)

Add extension to url

Parameters

url : str

Url

Returns

str

Url with extension

Expand source code

def prepare_url(self, url):
    """Add extension to url

    Parameters
    ----------
    url : str
        Url

    Returns
    -------
    str
        Url with extension
    """
    return f"{url}{self.EXTENSION}"

def valid_response(self, resp)

Check reponse's validity by mime

Parameters

resp : aiohttp.client_reqrep.ClientResponse

Response

Returns

bool

Is valid response

Expand source code

def valid_response(self, resp):
    """Check reponse's validity by mime

    Parameters
    ----------
    resp : aiohttp.client_reqrep.ClientResponse
        Response

    Returns
    -------
    bool
        Is valid response
    """
    return True if resp.content_type == self.MIME else False

class Singleton (*args, **kwargs)

Class realized pattern singleton

Expand source code

class Singleton(type):
    """Class realized pattern singleton
    """
    _instances = {}

    def __call__(cls, *args, **kwargs):
        """Invoke

        Returns
        -------
        cls
            Class instance
        """
        if cls not in cls._instances:
            cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
        return cls._instances[cls]

Ancestors

• builtins.type