python 运算

使用的是python3

#coding = utf-8
a = int(input("input number:"))
b = int(input("input number2:"))
print("a+b= ",(a+b)) 
print("a-b= ",(a-b))
print("a*b= ",a*b)
print("a/b= ",a/b)
print('this is my first python program!')