第七章第3讲：python函数的关键字参数、默认参数、（收集参数）

def hello1(greeting,name):
    print("%s %s" % (greeting,name))
def hello2(name,greeting):
    # print("%s %s" % (name,greeting))
    print("%s %s" % (greeting,name))

print(hello1("hello","world"))
print(hello2("hello","world"))
print(hello2(greeting="hello",name="world"))

def calculateTax(price=3,tax_rage=9):
    talTotal = price * tax_rage
    return talTotal
print(calculateTax(6,2))
print(calculateTax())


结果：
12
27

# 收集参数
def many_params(*nums):
    #print(nums)
    return nums
print(many_params("hello"))
print(many_params(1,2,3))

def stdentInfo(name,*nums):
    # print(name,nums)
    return name,nums
print(stdentInfo("Leo","Bella",12,"sex"))

结果：
(‘hello‘,)
(1,3)
(‘Leo‘,(‘Bella‘,‘sex‘))