「自作Python100本ノック」7日目（1週間の感想：31本〜40本目） ref: https://qiita.com/ahpjop/items/e852688b0e91eee50e00

file4.txt

#問題のコード

short_list = [1,2,3]
while True:
    value = input("Position [q to qui]? ")
    if value == "q":
        break
    positon = int(value)
    print(short_list[position])


#エラー処理を加えたもの

short_list = [1,2,3]
while True:
    value = input("Position [q to qui]? ")
    if value == "q":
        breakt
    try:
        positon = int(value)
        print(short_list[position])
    except IndexError as err:
        print("Bad index:", position)
    except Exception as other:
        print("something else broke:", other)

file6.txt

#クラス
class Elements:
    def __init__(self, name, symbol, number):
        self.name = name
        self.symbol = symbol
        self.number = number
#辞書
el_dict = {"name": "Hydrogem", "symbol": "H", "number": 1 }
　```

#辞書から初期化
hydrogem = Elements(**el_dict) # 辞書を引数に渡すときは「**」 をつける
hydrogem.name

q31.py

odd = {number for number in range(10) if number % 2 != 0}
odd

q32.py

for thing in ("Got %s" % number for number in range(10)):
    print(thing)

q33.py

def get_odds():
    for number in range(1, 10, 2):
        yield number



for count, number in enumerate(get_odds(), 1):
    if count == 3:
        print(number)
        break

q34.py

def test(func):
    def new_func(*args, **kwargs):
        print("start")
        result = func(*args, **kwargs)
        print("end")
        return result
    return new_func

@test
def greeting():
    print("Hello")

greeting()

q35.py

#問題のコード

short_list = [1,2,3]
while True:
    value = input("Position [q to qui]? ")
    if value == "q":
        break
    positon = int(value)
    print(short_list[position])





#エラー処理を加えたもの

short_list = [1,2,3]
while True:
    value = input("Position [q to qui]? ")
    if value == "q":
        breakt
    try:
        positon = int(value)
        print(short_list[position])
    except IndexError as err:
        print("Bad index:", position)
    except Exception as other:
        print("something else broke:", other)

q36.py

titles = ["Creature of Habit", "Crewel Fate"]
plots = ["A nun turns into a monster", "A haunted yarn shop"]

movies = dict(zip(titles, plots))
movies

q37.py

#クラス
class Elements:
    def __init__(self, name, symbol, number):
        self.name = name
        self.symbol = symbol
        self.number = number
#辞書
el_dict = {"name": "Hydrogem", "symbol": "H", "number": 1 }






#解答
#辞書から初期化
hydrogem = Elements(**el_dict) # 辞書を引数に渡すときは「**」 をつける
hydrogem.name

q38.py

#問題のクラス
class Elements:
    def __init__(self, name, symbol, number):
        self.name = name
        self.symbol = symbol
        self.number = number





#解答
class Elements:
    def __init__(self, name, symbol, number):
        self.name = name
        self.symbol = symbol
        self.number = number
    def __str__(self):
        return ("name: %s, symbol: %s, number: %s" % (self.name, self.symbol, self.number))

el_dict = {"name": "Hydrogem", "symbol": "H", "number": 1 }

hydrogem = Elements(**el_dict)
print(hydrogem)

q39.py

#問題
class Elements:
    def __init__(self, name, symbol, number):
        self.__name = name
        self.__symbol = symbol
        self.__number = number

#解答
class Elements:
    def __init__(self, name, symbol, number):
        self.__name = name
        self.__symbol = symbol
        self.__number = number

    @property#属性を非公開にする
    def name(self):
        return self.__name

    def symbol(self):
        return self.__symbol

    def number(self):
        return self.__number

el_dict = {"name": "Hydrogem", "symbol": "H", "number": 1 }

hydrogem = Elements(**el_dict)

hydrogem.name
hydrogem.__name

q40.py

class Bear:
    def eats(self):
        return "berries"

class Rabbit:        
    def eats(self):
        return "clover"

class Octothorpe:        
    def eats(self):
        return "campers"


b = Bear()
r = Rabbit()
o = Octothorpe()

print(b.eats())
print(r.eats())
print(o.eats())