def get_currency_symbols(self) -> List[str]:
        """ Returns the used currencies' symbols as an array """
        result = []
        currencies = self.currencies.get_book_currencies()
        for cur in currencies:
            result.append(cur.mnemonic)
        return result
def get_currency_symbols ( self ) -> List [ str ] : result = [ ] currencies = self . currencies . get_book_currencies ( ) for cur in currencies : result . append ( cur . mnemonic ) return result
Returns the used currencies' symbols as an array