Python | Ways to change keys in dictionary
Given a dictionary, the task is to change the key based on the requirement. Let’s see different methods we can do this task.
Method #1 : Using naive method
# Python code to demonstrate # changing keys of dictionary # using naive method # inititialising dictionary ini_dict = {'nikhil': 1, 'vashu' : 5, 'manjeet' : 10, 'akshat' : 15} # printing initial json print ("initial 1st dictionary", ini_dict) # changing keys of dictionary ini_dict['akash'] = ini_dict['akshat'] del ini_dict['akshat'] # printing final result print ("final dictionary", str(ini_dict)) |
chevron_right
filter_none
Output:
initial 1st dictionary {‘akshat’: 15, ‘nikhil’: 1, ‘manjeet’: 10, ‘vashu’: 5}
final dictionary {‘akash’: 15, ‘nikhil’: 1, ‘manjeet’: 10, ‘vashu’: 5}
Method #2: Using pop()
# Python code to demonstrate # changing keys of dictionary # using pop() method # inititialising dictionary ini_dict = {'nikhil': 1, 'vashu' : 5, 'manjeet' : 10, 'akshat' : 15} # printing initial json print ("initial 1st dictionary", ini_dict) # changing keys of dictionary ini_dict['akash'] = ini_dict.pop('akshat') # printing final result print ("final dictionary", str(ini_dict)) |
chevron_right
filter_none
Output:
initial 1st dictionary {‘akshat’: 15, ‘manjeet’: 10, ‘vashu’: 5, ‘nikhil’: 1}
final dictionary {‘akash’: 15, ‘manjeet’: 10, ‘vashu’: 5, ‘nikhil’: 1}
Method #3: Using zip()
Suppose we want to change all keys of dictionary.
# Python code to demonstrate # changing all keys of dictionary # corresponding to list using zip() # inititialising dictionary ini_dict = {'nikhil': 1, 'vashu' : 5, 'manjeet' : 10, 'akshat' : 15} # initialising list ini_list = ['a', 'b', 'c', 'd'] # printing initial json print ("initial 1st dictionary", ini_dict) # changing keys of dictionary final_dict = dict(zip(ini_list, list(ini_dict.values()))) # printing final result print ("final dictionary", str(final_dict)) |
chevron_right
filter_none
Output:
initial 1st dictionary {‘akshat’: 15, ‘manjeet’: 10, ‘vashu’: 5, ‘nikhil’: 1}
final dictionary {‘c’: 5, ‘d’: 1, ‘a’: 15, ‘b’: 10}
Recommended Posts:
- Python | Add new keys to a dictionary
- Python | Grouping dictionary keys by value
- Python | Get total keys in dictionary
- Python | Add keys to nested dictionary
- Python Dictionary | keys() method
- Python | Minimum value keys in Dictionary
- Python | Count keys with particular value in dictionary
- Python | Get dictionary keys as a list
- Python | Remove Keys from dictionary starting with K
- Python | Initialize dictionary with multiple keys
- Python | Extract specific keys from dictionary
- Python | Sort dictionary keys to list
- Python | Initialize a dictionary with only keys from a list
- Python | Reversed Order keys in dictionary
- Python | Unpacking dictionary keys into tuple
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.
