Some Python-- dictionary usage

1.dict.items()

Example 1:

In return may traverse the list (key, value) tuples array.

dict = {'Name': 'Runoob', 'Age': 7}

print ("Value : %s" % dict.items())

Return result:

Value : dict_items([('Age', 7), ('Name', 'Runoob')])

 

Example 2: traverse

dict = {'Name': 'Runoob', 'Age': 7}
for i,j in dict.items():
    print(i, ":\t", j)

Return result:

Name :   Runoob
Age :    7

Example 3: A dictionary of key value and the composition of a new list:

d={1:"a",2:"b",3:"c"}
result=[]
for k,v in d.items():
    result.append(k)
    result.append(v)

print(result)

Return result:

[1, 'a', 2, 'b', 3, 'c']

 

2.