python笔记之字典的创建

#传统方式创建D = {}D['name'] = 'Julys'D['age'] = 19D = {'name':'Julys', 'age':19}#通过dict函数创建D = dict(name='Julys', age=19)D = dict([('name', 'Julys'), ('age', 19)])D = dict(zip(['name', 'age'], ['Julys', 19]))#传入键列表以及所有键的初始值，默认为NoneD = dict.fromkeys(['a', 'b'], 0)D = {}.fromkeys(['a', 'b'], 0)#通过字典解析创建D = {k : v for (k, v) in zip(['a', 'b', 'c'], [1, 2, 3])}D = {x : x ** 2 for x in [1, 2, 3, 4]}D = {c.lower() : c + '!' for c in ['ABC', 'DE', 'F']}