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Python – Append Dictionary Keys and Values ( In order ) in dictionary

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  • Difficulty Level : Basic
  • Last Updated : 14 Jul, 2022
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Given a dictionary, perform append of keys followed by values in list.

Input : test_dict = {“Gfg” : 1, “is” : 2, “Best” : 3} Output : [‘Gfg’, ‘is’, ‘Best’, 1, 2, 3] Explanation : All the keys before all the values in list. Input : test_dict = {“Gfg” : 1, “Best” : 3} Output : [‘Gfg’, ‘Best’, 1, 3] Explanation : All the keys before all the values in list.

Method #1 : Using list() + keys() + values()

This is one of the ways in which this task can be performed. In this, we extract keys and values using keys() and values(), convert then to list using list() and perform append in order.

Python3




# Python3 code to demonstrate working of
# Append Dictionary Keys and Values ( In order ) in dictionary
# Using values() + keys() + list()
 
# initializing dictionary
test_dict = {"Gfg" : 1, "is" 3, "Best" : 2}
 
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
 
# + operator is used to perform adding keys and values
res = list(test_dict.keys()) + list(test_dict.values())
 
# printing result
print("The ordered keys and values : " + str(res))

Output

The original dictionary is : {'Gfg': 1, 'is': 3, 'Best': 2}
The ordered keys and values : ['Gfg', 'is', 'Best', 1, 3, 2]

Method #2 : Using chain() + keys() + values()

This is one of the ways in which this task can be performed. In this, we bind keys with values together in order using chain().

Python3




# Python3 code to demonstrate working of
# Append Dictionary Keys and Values ( In order ) in dictionary
# Using chain() + keys() + values()
from itertools import chain
 
# initializing dictionary
test_dict = {"Gfg" : 1, "is" 3, "Best" : 2}
 
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
 
# chain() is used for concatenation
res = list(chain(test_dict.keys(), test_dict.values()))
 
# printing result
print("The ordered keys and values : " + str(res))

Output

The original dictionary is : {'Gfg': 1, 'is': 3, 'Best': 2}
The ordered keys and values : ['Gfg', 'is', 'Best', 1, 3, 2]

Method #3 : Using  list() +keys() + values() + extend()

Python3




# Python3 code to demonstrate working of
# Append Dictionary Keys and Values
#( In order ) in dictionary
# Using values() + keys() + extend()+list()
 
# initializing dictionary
test_dict = {"Gfg": 1, "is": 3, "Best": 2}
 
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
 
a = list(test_dict.keys())
b = list(test_dict.values())
a.extend(b)
res = a
 
# printing result
print("The ordered keys and values : " + str(res))

Output

The original dictionary is : {'Gfg': 1, 'is': 3, 'Best': 2}
The ordered keys and values : ['Gfg', 'is', 'Best', 1, 3, 2]

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