__author__ = 'mare' d = dict(a=1, b=3, c=5) #{'a': 1, 'c': 5, 'b': 3} type(d) #< type 'dict'> color = {"apple":"red", "banana":"yellow"} #{'apple': 'red', 'banana': 'yellow'} print( color["apple"] ) #red #color[0] is not support, error #color += {"cherry":"red"} -> error color["cherry"] = "red" #{'cherry': 'red', 'apple': 'red', 'banana': 'yellow'} color["apple"] = "green" #{'cherry': 'red', 'apple': 'green', 'banana': 'yellow'} #items(), keys(), values() for c in color.items(): print(c) #('apple', 'green') #('cherry', 'red') #('banana', 'yellow') print('--') for k, v in color.items(): print(k, v) #apple green #cherry red #banana yellow print('--') for k in color.keys(): print(k) #apple #cherry #banana print('--') for v in color.values(): print(v) #green #red #yellow del color['cherry'] print(color) color.clear() #{'apple': 'green', 'banana': 'yellow'} print(color) #{} #more complex s = {'age':40.5, 'job':[1, 2, 3], 'name':{'kim':2, 'Cho':1}} print(s) #{'name': {'Cho': 1, 'kim': 2}, 'age': 40.5, 'job': [1, 2, 3]}
1/22/2014
(python study) about dictionary variable (example source code)
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