Python较基础~?.:“_”

##开发一个sum_2d的函数,函数能够实现两个数字的求和功能,使用sum_2()和sum_2(n1,n2)完成

def sum_2(n1=5,n2=10):
    return n1+n2

print(sum_2())     #15
print(sum_2(4,8))    #12



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def sum_2_num():

    num1 = 10
    num2 = 20
    result = num1 + num2

    print("%d + %d = %d" % (num1, num2, result))

sum_2_num()

img


方法2:

def sum_2_num(n1,n2):

    result = n1 + n2
    print("%d + %d = %d" % (n1, n2, result))
sum_2_num(10,30)

img