coding=utf-8

#删除下文中的"_"，并输入缺失的代码
name,age,weight,height = ,,,_
print("my name is " + __ + "," + __ + " years old," + "my weight is " + str(__) + " kg," + "my height is " + __(height) + " cm.")

name,age,weight,height = '张三',21,60,170
print("my name is " + name + "," + str(age) + " years old," + "my weight is " + str(weight) + " kg," + "my height is " + str(height) + " cm.")