元类、反射及双线方法

元类

print(type("abc"))
print(type(True))
print(type(100))
print(type([1, 2, 3]))
print(type({"name": "太白金星"}))
print(type((1,2,3)))
print(type(object))

class A:
    pass

print(isinstance(object,type))
print(isinstance(A, type))print(type("abc"))
print(type(True