Add a feature to the following class definition.
class Student(): 
    def __init__(self, name, age, grade): 
        self.name = name 
        self.age = age 
        self.grade = grade
class Student(): 
    def __init__(self, name, age, grade, gender): 
        self.name = name 
        self.age = age 
        self.grade = grade
        self.gender = gender
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Add a feature to the following class definition.

### Response:
class Student(): 
    def __init__(self, name, age, grade, gender): 
        self.name = name 
        self.age = age 
        self.grade = grade
        self.gender = gender