Python入门题036判断类型（3种方法）

　　题目：
　　判断一个变量的类型，至少用3种方法。
　　#python #内置函数 #变量类型
　　视频教程：
　　Python入门题036：判断类型（3种方法）
　　代码1： class TestClass:     pass   v1 = 1 v2 = 1.0 v3 = ＂hello＂ v4 = TestClass()  print(＂type(v1) = {}＂.format(type(v1))) print(＂type(v2) = {}＂.format(type(v2))) print(＂type(v3) = {}＂.format(type(v3))) print(＂type(v4) = {}＂.format(type(v4))) print(＂type(TestClass) = {}＂.format(type(TestClass)))  print(＂-＂ * 20)  print(＂type(v1) is int = {}＂.format(type(v1) is int)) print(＂type(v1) is float = {}＂.format(type(v1) is float))  print(＂type(v4) is TestClass = {}＂.format(type(v4) is TestClass))
　　代码2： class TestClass:     pass   v1 = 1 v2 = 1.0 v3 = ＂hello＂ v4 = TestClass()  print(＂v1.__class__ = {}＂.format(v1.__class__)) print(＂v2.__class__ = {}＂.format(v2.__class__)) print(＂v3.__class__ = {}＂.format(v3.__class__)) print(＂v4.__class__ = {}＂.format(v4.__class__))  print(＂-＂ * 20)  print(＂v1.__class__ is int = {}＂.format(v1.__class__ is int)) print(＂v1.__class__ is float = {}＂.format(v1.__class__ is float))  print(＂v4.__class__ is TestClass = {}＂.format(v4.__class__ is TestClass))
　　代码3： class TestClass:     pass   v1 = 1 v2 = 1.0 v3 = ＂hello＂ v4 = TestClass()  print(＂isinstance(v1, int) = {}＂.format(isinstance(v1, int))) print(＂isinstance(v2, float) = {}＂.format(isinstance(v2, float))) print(＂isinstance(v3, str) = {}＂.format(isinstance(v3, str))) print(＂isinstance(v4, TestClass) = {}＂.format(isinstance(v4, TestClass))) print(＂isinstance(v4, TestClass) = {}＂.format(isinstance(TestClass, TestClass)))