当我们实例化一个对象时，python中的类变量是否表现为实例变量？

class MyClass:
    class_variable = "I am a class variable"
    
    def __init__(self, instance_variable):
        self.instance_variable = instance_variable

# 实例化两个对象
obj1 = MyClass("Object 1")
obj2 = MyClass("Object 2")

print(obj1.instance_variable)  # 输出：Object 1
print(obj2.instance_variable)  # 输出：Object 2

print(obj1.class_variable)  # 输出：I am a class variable
print(obj2.class_variable)  # 输出：I am a class variable

# 修改实例变量
obj1.instance_variable = "Modified Object 1"
print(obj1.instance_variable)  # 输出：Modified Object 1
print(obj2.instance_variable)  # 输出：Object 2

# 修改类变量
MyClass.class_variable = "Modified class variable"

print(obj1.class_variable)  # 输出：Modified class variable
print(obj2.class_variable)  # 输出：Modified class variable