Created: July-01, 2021 | Updated: November-26, 2021 This article introduces various methods to change the key in a dictionary in Python. To change the key in a dictionary in Python, follow these steps. Check the example below, which demonstrates these steps. The following code illustrates this method. Here, we see that the key’s value Output:
Use the pop() Function in PythonTo change the key in a dictionary in Python, refer to the following steps.
The example below illustrates this.
Output:
Here, we see that the key’s value Traverse Through the Dictionary Using a for Loop and Change the Key in a Dictionary in PythonFor this, you first take the target dictionary and another dictionary containing the new key value. After that, you eventually switch all the keys accordingly using a
Here, we see that the key’s value Output:
Rebuild an Entirely New Instance in PythonIn the Python 3.7+ dictionary, you can preserve the ordering. For this, rebuild an entirely new instance of the dictionary as follows.
Here is an example that demonstrates this.
Here, we see that the key’s value Output:
Use the OrderedDict Class in PythonIn the Python 3.7+ dictionary, you can preserve the ordering by using the Note that you first need to import
Here’s an example you can follow.
Here, we see that the key’s value Output:
Use the Pandas.DataFrame Function in PythonYou can use Pandas to change a key in a dictionary in Python. Firstly, import the Then, use the
Check this example program.
Here, we see that the key’s value Output:
Related Article - Python DictionaryCan a key be changed in Python?Since keys are what dictionaries use to lookup values, you can't really change them. The closest thing you can do is to save the value associated with the old key, delete it, then add a new entry with the replacement key and the saved value.
How do you write keys and values in Python?Python's efficient key/value hash table structure is called a "dict". The contents of a dict can be written as a series of key:value pairs within braces { }, e.g. dict = {key1:value1, key2:value2, ... }. The "empty dict" is just an empty pair of curly braces {}.
How do we edit a key of a dictionary Python?To change the key in a dictionary in Python, refer to the following steps.. Pop the old key using the pop function. Follow this example. Python. Copy pop(old_key). Assign a new key to the popped old key. Follow this example. Python. Copy dict_ex[new_key] = dict_ex. pop(old_key). |