Day03 编码错误 NON-ASCII CHARATER ‘\xe9’

代码如下

def add(x, y):
    return x+y

def sub(x, y):
    return x-y

def mul(x, y):
    return x*y

def div(x, y):
    return x/y

print("选择运算：\n1、相加\n2、相减\n3、相乘\n4、相除")

choice = input("输入你的选择（1/2/3/4):")
num1 = int(input("输入第一个数字："))
num2 = int(input("输入第二个数字："))

if choice == '1':
    print(num1, "+", num2, "=", add(num1, num2))
elif choice == '2':
    print(num1, "-", num2, "=", sub(num1, num2))
elif choice == '3':
    print(num1, "*", num2, "=", mul(num1, num2))
elif choice == '4':
    print(num1, "/", num2, "=", div(num1, num2))
else:
    print("非法输入")

错误如下

Start by running the calculator code with the Python interpreter and inspect how the source file is saved and decoded. Confirm the interpreter version and source encoding involved in the NON-ASCII CHARATER error; it is done when the posted program runs without that encoding error and accepts its documented choices.