如何使用列表动态创建Python类实例？

class MyClass:
    def __init__(self, name):
        self.name = name

    def say_hello(self):
        print("Hello, I'm", self.name)

class_list = [
    {"class_name": "MyClass", "name": "Instance 1"},
    {"class_name": "MyClass", "name": "Instance 2"}
]

instances = []
for item in class_list:
    class_name = item["class_name"]
    name = item["name"]
    cls = globals()[class_name]
    instance = cls(name)
    instances.append(instance)

for instance in instances:
    instance.say_hello()