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HTML ファイル生成日時: 2024/12/23 15:49:04.419 (台灣標準時)
実行してみると以下のようになる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary fruit_price = { 'apple': 50, 'banana': 10, 'cherry': 100, } # printing a whole dictionary print (fruit_price) # printing an element of a dictionary print ('price of banana =', fruit_price['banana'])
% ./test_dictionary_0.py
{'apple': 50, 'banana': 10, 'cherry': 100}
price of banana = 10
実行すると、次のようになる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary fruit_price = {} # printing a whole dictionary print (fruit_price) # adding an element to a dictionary fruit_price['apple'] = 50 # printing a whole dictionary print (fruit_price) # adding one more element to a dictionary fruit_price['banana'] = 10 # printing a whole dictionary print (fruit_price) # adding one more element to a dictionary fruit_price['cherry'] = 100 # printing a whole dictionary print (fruit_price)
% ./test_dictionary_1.py
{}
{'apple': 50}
{'apple': 50, 'banana': 10}
{'apple': 50, 'banana': 10, 'cherry': 100}
実行すると次のようになる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary fruit_price = { 'durian': 200, 'cherry': 100, 'apple': 50, 'grape': 150, 'banana': 10, } # printing a whole dictionary print (fruit_price) # looping dictionary print ('fruit prices 1:') for fruit in fruit_price: print (' ', fruit, ':', fruit_price[fruit]) print ('fruit prices 2:') for fruit in fruit_price.keys (): print (' ', fruit, ':', fruit_price[fruit]) print ('fruit prices 3:') for fruit, price in fruit_price.items (): print (' ', fruit, ':', price)
% ./test_dictionary_2.py
{'durian': 200, 'cherry': 100, 'apple': 50, 'grape': 150, 'banana': 10}
fruit prices 1:
durian : 200
cherry : 100
apple : 50
grape : 150
banana : 10
fruit prices 2:
durian : 200
cherry : 100
apple : 50
grape : 150
banana : 10
fruit prices 3:
durian : 200
cherry : 100
apple : 50
grape : 150
banana : 10
実行してみる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary fruit_price = { 'durian': 200, 'cherry': 100, 'apple': 50, 'grape': 150, 'banana': 10, } # printing a whole dictionary print (fruit_price) # looping dictionary (sort by keys) print ('fruit prices 1:') for fruit in sorted (fruit_price): print (' ', fruit, ':', fruit_price[fruit]) print ('fruit prices 2:') for fruit in sorted (fruit_price.keys ()): print (' ', fruit, ':', fruit_price[fruit]) print ('fruit prices 3:') for fruit, price in sorted (fruit_price.items ()): print (' ', fruit, ':', price)
% ./test_dictionary_3.py
{'durian': 200, 'cherry': 100, 'apple': 50, 'grape': 150, 'banana': 10}
fruit prices 1:
apple : 50
banana : 10
cherry : 100
durian : 200
grape : 150
fruit prices 2:
apple : 50
banana : 10
cherry : 100
durian : 200
grape : 150
fruit prices 3:
apple : 50
banana : 10
cherry : 100
durian : 200
grape : 150
実行してみる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary fruit_price = { 'durian': 200, 'cherry': 100, 'apple': 50, 'grape': 150, 'banana': 10, } # printing a whole dictionary print (fruit_price) # looping dictionary (sort by values) print ('fruit prices 1:') for fruit, price in sorted (fruit_price.items (), key=lambda x: x[1]): print (' ', fruit, ':', price) print ('fruit prices 2:') for fruit in sorted (fruit_price, key=fruit_price.get): print (' ', fruit, ':', fruit_price[fruit])
% ./test_dictionary_4.py
{'durian': 200, 'cherry': 100, 'apple': 50, 'grape': 150, 'banana': 10}
fruit prices 1:
banana : 10
apple : 50
cherry : 100
grape : 150
durian : 200
fruit prices 2:
banana : 10
apple : 50
cherry : 100
grape : 150
durian : 200
実行すると以下のようになる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary of dictionary data = { 'Taiwan': {'capital': 'Taipei', 'climate': 'tropical', 'currency': 'NT'}, 'Japan': {'capital': 'Tokyo', 'climate': 'temperate', 'currency': 'Yen'}, 'Korea': {'capital': 'Seoul', 'climate': 'temperate', 'currency': 'Won'}, 'Vietnam': {'capital': 'Hanoi', 'climate': 'tropical', 'currency': 'Dong'}, 'Thailand': {'capital': 'Bangkok', 'climate': 'tropical', 'currency': 'Baht'}, 'Malaysia': {'capital': 'Kuala Lumpur', 'climate': 'tropical', 'currency': 'Ringgit'}, 'Singapore': {'capital': 'Singapore', 'climate': 'tropical', 'currency': 'Dollar'}, 'Indonesia': {'capital': 'Jakarta', 'climate': 'tropical', 'currency': 'Rupiah'}, } # printing an element of a dictionary print ("Capital of Malaysia =", data['Malaysia']['capital']) print ("Currency of Thailand =", data['Thailand']['currency'])
% ./test_dictionary_5.py Capital of Malaysia = Kuala Lumpur Currency of Thailand = Baht
実行すると次のようになる。#!/usr/pkg/bin/python3.9 # initialisation of a dictionary of dictionary data = {} data['Taiwan'] = {} data['Taiwan']['capital'] = 'Taipei' data['Taiwan']['climate'] = 'tropical' data['Taiwan']['currency'] = 'NT' data['Japan'] = {} data['Japan']['capital'] = 'Tokyo' data['Japan']['climate'] = 'temperate' data['Japan']['currency'] = 'Yen' # printing a dictionary print ("data['Taiwan'] =", data['Taiwan']) print ("data['Japan'] =", data['Japan']) print ("data['Japan']['climate'] =", data['Japan']['climate'])
% ./test_dictionary_6.py
data['Taiwan'] = {'capital': 'Taipei', 'climate': 'tropical', 'currency': 'NT'}
data['Japan'] = {'capital': 'Tokyo', 'climate': 'temperate', 'currency': 'Yen'}
data['Japan']['climate'] = temperate