【初心者】Pythonの関数

###Pythonで関数を使ってみる
######引数のデフォルトを指定する

def hello(name="A", age=10):
	result = "Hello I'm " + name + ", I'm " + str(age)
	print(result)

>>> hello()
Hello I'm A, I'm 10
>>> hello("Bob", 20)
Hello I'm Bob, I'm 20

######文字列の引数を逆にする

>>> def reverse(s):
	cnt = len(s)
	result=""

	if cnt < 1:
		result = s
	else:		
		i = cnt-1
		while i > -1:
			result = result + s[i]
			i = i - 1
	print(result)

	
>>> reverse("abcde")
edcba
>>> reverse("a")
a

#####3で割り切れるか、5で割り切れるか、両方で割り切れるか

>>> def fb(n):
	mod3 = n % 3
	mod5 = n % 5
	result = ""
	if mod3 == 0:
		result += "Fizz"
	if mod5 == 0:
		result += "Buzz"
	return result

>>> i = 1
>>> while i <= 20:
	print(i, fb(i))
	i = i + 1

1 
2 
3 Fizz
4 
5 Buzz
6 Fizz
7 
8 
9 Fizz
10 Buzz
11 
12 Fizz
13 
14 
15 FizzBuzz
16 
17 
18 Fizz
19 
20 Buzz