Cara menggunakan python key-value pair list

Dictionary in Python is an unordered collection of data values, used to store data values like a map, which unlike other Data Types that hold only single value as an element, Dictionary holds key:value pair. While using Dictionary, sometimes, we need to add or modify the key/value inside the dictionary. Let’s see how to add a key:value pair to dictionary in Python. Code #1: Using Subscript notation This method will create a new key:value pair on a dictionary by assigning a value to that key. 

Python3

# Python program to add a key:value pair to dictionary

 

dict = {'key1':'geeks',

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

0:

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

2

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

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

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

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

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

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

8dict# Python program to add a key:value pair to dictionary0

# Python program to add a key:value pair to dictionary1 

# Python program to add a key:value pair to dictionary2

# Python program to add a key:value pair to dictionary3

 

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

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

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

7

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

8dict# Python program to add a key:value pair to dictionary0

Output:

Current Dict is: {‘key2’: ‘for’, ‘key1’: ‘geeks’} Updated Dict is: {‘key3’: ‘Geeks’, ‘key5’: ‘portal’, ‘key6’: ‘Computer’, ‘key4’: ‘is’, ‘key1’: ‘geeks’, ‘key2’: ‘for’}

Code #2: Using update[] method 

Python3

dict = {'key1':'geeks',

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

0:

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

2

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

3

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

4

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

5

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

6

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

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

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

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

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Output:

Current Dict is: {‘key2’: ‘for’, ‘key1’: ‘geeks’} {‘newkey1’: ‘portal’, ‘key4’: ‘is’, ‘key2’: ‘for’, ‘key1’: ‘geeks’, ‘key5’: ‘fabulous’, ‘key3’: ‘geeks’}

Code #3: Taking Key:value as input 

Python3

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

01

 

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

02

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

03

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

04dict

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

06

 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

52

Output:

 {'1': 'Geeks', 2: 'forGeeks'}

Code #4: Using a dictionary comprehension 

For example, you can create a new dictionary that adds a key:value pair to an existing dictionary like this:

Python3

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

53= {'key1':

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

58,

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

0:

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

62

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

3

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

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

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

69

 

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

70= {

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

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

73

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

75

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

4

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

77

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

78

Output

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

This creates a new dictionary called updated_dict that contains all the key:value pairs from existing_dict, as well as the new key:value pair ‘key3’: ‘value3’.