cities = ['NY', 'LA', 'SF']

city = cities[0]

city

'NY'

for city in cities:
    if city == 'NY':
        print('Party')
    elif city == 'LA':
        print("It's hot here.")
    else:
        print('Where am I?')

Party
It's hot here.
Where am I?

t = (1,2,3)

t.append(2)

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-7-14814bb52782> in <module>()
----> 1 t.append(2)

AttributeError: 'tuple' object has no attribute 'append'

my_list = [1,2,3]

my_dict = {'Taro':22, 'Yoko':12}

my_dict['Taro']

22

len(my_dict)

2

def adder(x,y):
    ''' これはxとyを足す関数です。'''
    answer = x+y
    return answer

adder(5,10)

15