Use enumerate to create a dictionary of mapping relationships between names and numeric categories

# 昆虫名字到数字类别的映射关系
INSECT_NAMES = ['Boerner', 'Leconte', 'Linnaeus', 
                'acuminatus', 'armandi', 'coleoptera', 'linnaeus']

# 昆虫名字到数字类别的映射关系
def get_insect_names():
    """
    return a dict, as following,
        {'Boerner': 0,
         'Leconte': 1,
         'Linnaeus': 2, 
         'acuminatus': 3,
         'armandi': 4,
         'coleoptera': 5,
         'linnaeus': 6
        }
    It can map the insect name into an integer label.
    """
    insect_category2id = {
    
    }
    for i, item in enumerate(INSECT_NAMES):
        print("i:{}".format(i))
        print("item:{}".format(item))
        insect_category2id[item] = i

    return insect_category2id

a = get_insect_names()

Part of the code of Baidu Feijia above, here is a note, compare the dictionary that uses enumerate to perform digital mapping to create a lot, anyway, it is like this

Output

i:0
item:Boerner
i:1
item:Leconte
i:2
item:Linnaeus
i:3
item:acuminatus
i:4
item:armandi
i:5
item:coleoptera
i:6
item:linnaeus


>>> a
{
    
    'Boerner': 0, 'Leconte': 1, 'Linnaeus': 2, 'acuminatus': 3, 'armandi': 4, 'coleoptera': 5, 'linnaeus': 6}

It can be seen from the output that enumerate will automatically generate a number of the corresponding size according to the position of the list element, thereby generating a dictionary of the corresponding number