Update function in Python dict (Dictionary)

Definition

dict1 = {
}
dict2 = {
}
dict1.update(dict2)

update() Function dictionary dict2 Of key / value Yes, update to dict1 in .

Example

dict1 = {
'Name': 'Jack', 'Age': 10}
dict2 = {
'Sex': 'boy' }
dict1.update(dict2)
print("Value : %s" % dict1)
#Value : {'Name': 'Jack', 'Age': 10, 'Sex': 'boy'}

Be careful

use update Update Dictionary dict1, There will be two situations ：

1. When there are the same keys ： Can use the latest dictionary dict2 in The key Corresponding value value .
2. When there is a new key ： Will directly put the dictionary dict2 Medium key、value Add to dict1 in .

dict1 = {
1: 2, 2: 2}
dict2 = {
1: 1, 3: 3}
dict1.update(dict2)
print(dict1)
#{1: 1, 2: 2, 3: 3}