How to Convert Data Types in Python with a Helper Class

class DataConverter:
    """A beginner-friendly helper class for common data conversions."""
    
    def __init__(self, data):
        self.data = data
    
    def to_list(self):
        """Convert string data (comma-separated) to a list."""
        if isinstance(self.data, str):
            return [item.strip() for item in self.data.split(",")]
        return list(self.data)
    
    def to_dict(self, keys):
        """Convert two lists into a dictionary (keys and values)."""
        values = self.to_list()
        return dict(zip(keys, values))
    
    def to_json_string(self):
        """Convert data to a JSON-formatted string."""
        return json.dumps(self.data)
    
    def to_csv_row(self):
        """Convert list data to a CSV row string."""
        items = self.to_list()
        return ",".join(str(item) for item in items)


class AdvancedConverter(DataConverter):
    """Extended converter with numeric type casting."""
    
    def to_numbers(self):
        """Convert string data to a list of integers."""
        return [int(item) for item in self.to_list()]
    
    def to_floats(self):
        """Convert string data to a list of floats."""
        return [float(item) for item in self.to_list()]


if __name__ == "__main__":
    import json
    
    raw_data = "10, 20, 30, 40"
    converter = AdvancedConverter(raw_data)
    
    print("List:", converter.to_list())
    print("Numbers:", converter.to_numbers())
    print("Floats:", converter.to_floats())
    print("CSV row:", converter.to_csv_row())
    print("JSON:", converter.to_json_string())
    print("Dict:", converter.to_dict(["a", "b", "c", "d"]))