Python下字典创建的8种方法

>>> info_dict = {}
>>> print(type(info_dict))
<class 'dict'>

>>> student_info = {'name': 'nock', 'age': 18, 'class': 18}
>>> student_info
{'name': 'nock', 'class': 18, 'age': 18}

>>> info_list = [('name', 'nock'), ('age', 18), ('job', 'IT')]
>>> info_dict = dict(info_list)
>>> info_dict
{'job': 'IT', 'name': 'nock', 'age': 18}

>>> info_dict = dict(name='nock', age=18, job='IT')
>>> info_dict
{'job': 'IT', 'name': 'nock', 'age': 18}

>>> num_info = { i:2*i for i in range(10) if i != 6}
>>> num_info
{0: 0, 1: 2, 2: 4, 3: 6, 4: 8, 5: 10, 7: 14, 8: 16, 9: 18}

>>> info = dict(zip('xyz', [1, 2, 3]))
>>> info
{'y': 2, 'z': 3, 'x': 1}

>>> info = dict.fromkeys(range(3), 'x')
>>> info
{0: 'x', 1: 'x', 2: 'x'}

>>> list = ['x', 1, 'y', 2, 'z', 3]
>>> info = dict(zip(list[::2], list[1::2]))
>>> info
{'y': 2, 'z': 3, 'x': 1}