957961ab1b7494a3f45ee4ac1d09918d3c237c14,qiskit/finance/data_providers/wikipedia_data_provider.py,WikipediaDataProvider,__init__,#WikipediaDataProvider#Any#Any#Any#Any#,41

Before Change

        
        super().__init__()
        if not HAS_QUANDL:
            raise NameError("The Quandl package is required to use the "
                            "WikipediaDataProvider. You can install it with "
                            ""pip install quandl".")
        self._tickers = None  // type: Optional[Union[str, List[str]]]
        tickers = tickers if tickers is not None else []
        if isinstance(tickers, list):
            self._tickers = tickers

After Change

        
        super().__init__()
        if not _HAS_QUANDL:
            raise MissingOptionalLibraryError(
                libname="Quandl",
                name="WikipediaDataProvider",
                pip_install="pip install quandl")
        self._tickers = None  // type: Optional[Union[str, List[str]]]
        tickers = tickers if tickers is not None else []
        if isinstance(tickers, list):
            self._tickers = tickers

Instances