python函数该怎么用

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# 13函数
#13.1 编写一个函数，用大写字母打印你的名字。
def printName():
print(" CCCC A RRRRR TTTTTTT EEEEEE RRRRR")
print(" C C A A R R T E R R")
print("C A A R R T EEEEEE R R")
print(" C AAAAAAAAA RRRRRR T E RRRRRR")
print(" C CA A R R T E R R")
print(" CCCC A AR R T EEEEEE R R")
print()

for i in range(5):
printName() #若是加print(printName()) 则会出现none值

#13.2 建立一个函数，可以打印全世界人名、地址、街道、城市、州、省，邮编和国家
def printAdress(name,address,street,city,code,country):
print(name)
print(address)
print(street)
print(city)
print(code)
print(country)
printAdress("jack","303#","NO1","North","01001","RUSSIA")

#13.3 13-7列子，要求my_price是全局变量
def calculateTax(price,tax_rate):
total = price +(price * tax_rate)
global my_price
my_price = 1000
print("my_price (inside function) = ",my_price)
return total
my_price = float (input("Enter a price:"))
totalPrice = calculateTax(my_price,0.06)
print("price = ",my_price,"Total price = ", totalPrice)
print("my_price (outside function) =",my_price)

#13.4 计算零钱的总值
def countNo(quarters,dimes,nickels,pennies):
total = quarters * 5 +dimes * 2 + nickels *1 +pennies
return total #返回值
quarters = int(input())
dimes = int(input())
nickels= int(input())
pennies = int(input())

total = countNo(quarters,dimes,nickels,pennies)
print(total)

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