How to convert a list into a dictionary in python

Now there is a list, list1 = ['key1','key2','key3'], convert it into a dictionary like this: {'key1':'1','key2':'2',' key3':'3'}

Two methods for python to convert a list into a dictionary:

1. Method: Construct a list again list2 = [' 1','2','3'], after using zip to convert to a tuple, then convert the tuple to a dictionary.

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list1 = ['key1','key2','key3']
list2 = ['1','2','3']
dict(zip(list1,list2))
{'key1':'1','key2':'2','key3':'3'}

2. There are two methods to convert nested lists into dictionaries,

new_list= [['key1','value1'],['key2','value2'],['key3','value3']]
dict(list)
{'key3': 'value3', 'key2': 'value2', 'key1': 'value1'}

or this:

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'}

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