python 列表转为字典的两个小方法(小结)

>list1 = ['key1','key2','key3']

>list2 = ['1','2','3']

>dict(zip(list1,list2))

{'key1':'1','key2':'2','key3':'3'}

>new_list= [['key1','value1'],['key2','value2'],['key3','value3']]

>dict(list)

{'key3': 'value3', 'key2': 'value2', 'key1': 'value1'}

>new_list= [['key1','value1'],['key2','value2'],['key3','value3']]

>new_dict = {}

> for i in new_list:

...  new_dict[i[0]] = i[1]        #字典赋值，左边为key，右边为value

...

> new_dict

{'key3': 'value3', 'key2': 'value2', 'key1': 'value1'}