Python で zip

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zip() は、以下に示すように複数の反復可能オブジェクトを組み合わせて反復可能オブジェクトを作成できます。
*メモ:

• 反復可能は、最も短い入力反復可能がなくなると停止します。
• 反復可能オブジェクトにはインデックスを使用して直接アクセスできないため、list() を使用してインデックスを使用してアクセスします。

fruits = ["Apple", "Orange", "Banana", "Kiwi", "Lemon", "Mango"]
meats = ["Chicken", "Beef", "Pork", "Duck", "Mutton"]
vegetables = ["Onion", "Carrot", "Garlic", "Spinach", "Eggplant"]

print(zip(fruits, meats, vegetables))
# <zip object at 0x7da5876aaa40>

print(zip(fruits, meats, vegetables)[0])
# Error

print(list(zip(fruits, meats, vegetables)))
# [('Apple', 'Chicken', 'Onion'),
#  ('Orange', 'Beef', 'Carrot'),
#  ('Banana', 'Pork', 'Garlic'),
#  ('Kiwi', 'Duck', 'Spinach'),
#  ('Lemon', 'Mutton', 'Eggplant')]

f, m, v = list(zip(fruits, meats, vegetables))[0]
print(f, m, v)
# Apple Chicken Onion

for f, m, v in zip(fruits, meats, vegetables):
    print(f, m, v)
# Apple Chicken Onion
# Orange Beef Carrot
# Banana Pork Garlic
# Kiwi Duck Spinach
# Lemon Mutton Eggplant

fruits = ["Apple", "Orange", "Banana", "Kiwi", "Lemon", "Mango"]
meats = ["Chicken", "Beef", "Pork", "Duck", "Mutton"]
vegetables = ["Onion", "Carrot", "Garlic", "Spinach", "Eggplant"]

print(list(zip(zip(fruits, meats), vegetables)))
# [(('Apple', 'Chicken'), 'Onion'),
#  (('Orange', 'Beef'), 'Carrot'),
#  (('Banana', 'Pork'), 'Garlic'),
#  (('Kiwi', 'Duck'), 'Spinach'),
#  (('Lemon', 'Mutton'), 'Eggplant')]

fm, v = list(zip(zip(fruits, meats), vegetables))[0]
print(fm, v)
# ('Apple', 'Chicken') Onion

(f, m), v = list(zip(zip(fruits, meats), vegetables))[0]
[f, m], v = list(zip(zip(fruits, meats), vegetables))[0]
print(f, m, v)
# Apple Chicken Onion

for fm, v in zip(zip(fruits, meats), vegetables):
    print(fm, v)
# ('Apple', 'Chicken') Onion
# ('Orange', 'Beef') Carrot
# ('Banana', 'Pork') Garlic
# ('Kiwi', 'Duck') Spinach
# ('Lemon', 'Mutton') Eggplant

for (f, m), v in zip(zip(fruits, meats), vegetables):
for [f, m], v in zip(zip(fruits, meats), vegetables):
    print(f, m, v)
# Apple Chicken Onion
# Orange Beef Carrot
# Banana Pork Garlic
# Kiwi Duck Spinach
# Lemon Mutton Eggplant

fruits = ["Apple", "Orange", "Banana", "Kiwi", "Lemon", "Mango"]
meats = ["Chicken", "Beef", "Pork", "Duck", "Mutton"]
vegetables = ["Onion", "Carrot", "Garlic", "Spinach", "Eggplant"]

print(list(zip(zip(fruits, zip(meats)), vegetables)))
# [(('Apple', ('Chicken',)), 'Onion'),
#  (('Orange', ('Beef',)), 'Carrot'),
#  (('Banana', ('Pork',)), 'Garlic'),
#  (('Kiwi', ('Duck',)), 'Spinach'),
#  (('Lemon', ('Mutton',)), 'Eggplant')]

fm, v = list(zip(zip(fruits, zip(meats)), vegetables))[0]
print(fm, v)
# ('Apple', ('Chicken',)) Onion

(f, m), v = list(zip(zip(fruits, zip(meats)), vegetables))[0]
[f, m], v = list(zip(zip(fruits, zip(meats)), vegetables))[0]
print(f, m, v)
# Apple ('Chicken',) Onion

(f, (m,)), v = list(zip(zip(fruits, zip(meats)), vegetables))[0]
[f, [m]], v = list(zip(zip(fruits, zip(meats)), vegetables))[0]
print(f, m, v)
# Apple Chicken Onion

for fm, v in zip(zip(fruits, zip(meats)), vegetables):
    print(fm, v)
# ('Apple', ('Chicken',)) Onion
# ('Orange', ('Beef',)) Carrot
# ('Banana', ('Pork',)) Garlic
# ('Kiwi', ('Duck',)) Spinach
# ('Lemon', ('Mutton',)) Eggplant

for (f, m), v in zip(zip(fruits, zip(meats)), vegetables):
for [f, m], v in zip(zip(fruits, zip(meats)), vegetables):
    print(f, m, v)
# Apple ('Chicken',) Onion
# Orange ('Beef',) Carrot
# Banana ('Pork',) Garlic
# Kiwi ('Duck',) Spinach
# Lemon ('Mutton',) Eggplant

for (f, (m,)), v in zip(zip(fruits, zip(meats)), vegetables):
for [f, [m]], v in zip(zip(fruits, zip(meats)), vegetables):
    print(f, m, v)
# Apple Chicken Onion
# Orange Beef Carrot
# Banana Pork Garlic
# Kiwi Duck Spinach
# Lemon Mutton Eggplant

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