-
- Python Course
- Python Basics
- Interview Questions
- Python Quiz
- Popular Packages
- Python Projects
- Practice Python
- AI With Python
- Learn Python3
- Python Automation
- Python Web Dev
- DSA with Python
- Python OOPs
- Lists
- Strings
- Dictionaries
Open In App
Last Updated : 04 Mar, 2024
Summarize
Comments
Improve
Suggest changes
Like Article
Like
Report
We are given a dictionary my_dict and we need to delete the key from this dictionary and print the result. In this article, we will see some generally used methods for how to delete dictionary keys while Iterating in Python.
Example:
Input: {'a': 1, 'b': 2, 'c': 3}, key : bOutput: {'a': 1, 'c': 3}Explanation: Here, we have a dictionary with keys a, b, and c. We delete the key 'b' and return the updated dictionary.
Delete a Key from a Python Dictionary Using loop
Below are the methods of Python Delete Dictionary Key While Iterating in Python:
- Using a Copy of Keys
- Using Dictionary Comprehension
- Using Dict.pop() Method
Python Delete Dictionary Key Using loop Using a Copy of Keys
In this example, below code initializes a dictionary `my_dict` with key-value pairs. It then iterates through the keys in the dictionary, and if the key is ‘b’, it deletes that key-value pair. Finally, it prints the modified dictionary.
Python3
my_dict={'a':1,'b':2,'c':3}forkeyinlist(my_dict.keys()):ifkey=='b':delmy_dict[key]print(my_dict)Output
{'a': 1, 'c': 3}Python Delete Dictionary Key Using loop and Dictionary Comprehension
In this example, below code creates a dictionary
my_dictwith initial key-value pairs. It then uses a dictionary comprehension to create a new dictionary, excluding the key-value pair where the key is ‘b’.Python3
my_dict={'a':1,'b':2,'c':3}my_dict={key: valueforkey, valueinmy_dict.items()ifkey !='b'}print(my_dict)Output
{'a': 1, 'c': 3}Python Delete Dictionary Key Using loop and Dict.pop() Method
In this example, below code initializes a dictionary
my_dictwith key-value pairs. It iterates through the keys using a list of keys, and if the key is ‘b’, it removes the corresponding key-value pair using pop().Python3
my_dict={'a':1,'b':2,'c':3}forkeyinlist(my_dict.keys()):ifkey=='b':my_dict.pop(key)print(my_dict)Output
{'a': 1, 'c': 3}Conclusion
In conlcusion , Deleting dictionary keys while iterating in Python requires careful consideration to avoid unexpected behavior. The methods presented here provide simple and effective ways to achieve this task. Choose the method that best fits your specific use case, and always be mindful of the potential side effects of modifying a dictionary during iteration.
skcoder123
Improve
Next Article
Python - Remove Kth key from dictionary
Please Login to comment...
Similar Reads
Python - Extract Key's Value, if Key Present in List and Dictionary Given a list, dictionary, and a Key K, print the value of K from the dictionary if the key is present in both, the list and the dictionary. Input : test_list = ["Gfg", "is", "Good", "for", "Geeks"], test_dict = {"Gfg" : 5, "Best" : 6}, K = "Gfg" Output : 5 Explanation : "Gfg" is present in list and has value 5 in dictionary. Input : test_list = ["G 11 min read Python - Combine two dictionaries having key of the first dictionary and value of the second dictionary Given two dictionaries. The task is to merge them in such a way that the resulting dictionary contains the key from the first dictionary and the value from the second dictionary. Examples: Input : test_dict1 = {"Gfg" : 20, "is" : 36, "best" : 100}, test_dict2 = {"Gfg2" : 26, "is2" : 20, "best2" : 70} Output : {'Gfg': 26, 'is': 20, 'best': 70} Expla 8 min read Python Program to Remove Nth element from Kth key's value from the dictionary Given a dictionary with value lists, our task is to write a Python program to remove N element from Kth key's values. Examples: Input : test_dict = {"gfg" : [9, 4, 5, 2, 3, 2], "is" : [1, 2, 3, 4, 3, 2], "best" : [2, 2, 2, 3, 4]}, K, N = "gfg", 2Output : {'gfg': [9, 4, 5, 3], 'is': [1, 2, 3, 4, 3, 2], 'best': [2, 2, 2, 3, 4]}Explanation : 2 removed 9 min read Python | Remove item from dictionary when key is unknown Dictionary is a collection which is unordered, changeable and indexed. In Python, dictionaries are written with curly brackets, and they have keys and values. It is widely used in day to day programming, web development, and machine learning. Let's discuss the various ways to remove items from the dictionary when key is unknown. Method #1 : Using n 6 min read Python - Remove Key from Dictionary List Sometimes, while working with Python dictionaries, we can have a problem in which we need to remove a specific key from a dictionary list. This kind of problem is very common and has application in almost all domains including day-day programming and web development domain. Let's discuss certain ways in which this task can be performed. Method #1 : 7 min read Python - Remove Dictionary Key Words Sometimes, while working with Python strings, we can have a problem in which we need to remove all the words from a string that is part of the key of the dictionary. This problem can have applications in domains such as web development and day-day programming. Let's discuss certain ways in which this task can be performed. Method #1: Using split() 7 min read Python - Remove K valued key from Nested Dictionary Sometimes, while working with records, we can have a problem in which we need to perform the removal of a key from nested dictionary whose value us specific to K. This is a common problem and has its application in data domains such as web development. Lets discuss certain ways in which this task can be performed. Input : test_dict = {'CS': {'price 8 min read Python - Remove dictionary if given key's value is N Given list of dictionaries, remove dictionary whose Key K is N. Input : test_list = [{"Gfg" : 3, "is" : 7, "Best" : 8}, {"Gfg" : 9, "is" : 2, "Best" : 9}, {"Gfg" : 5, "is" : 4, "Best" : 10}, {"Gfg" : 3, "is" : 6, "Best" : 15}], K = "Gfg", N = 9 Output : [{"Gfg" : 3, "is" : 7, "Best" : 8}, {"Gfg" : 5, "is" : 4, "Best" : 10}, {"Gfg" : 3, "is" : 6, "B 5 min read Python - Remove Kth key from dictionary Many times, while working with Python, we can have a situation in which we require to remove the Kth key of the dictionary. This is useful for Python version 3.8 +, where key ordering is similar to the insertion order. Let’s discuss certain ways in which this task can be performed. Examples: Input : test_dict = {"Gfg" : 20, "is" : 36, "best" : 100, 6 min read Remove Dictionary from List If Key is Equal to Value in Python Removing dictionaries from a list based on a specific condition is a common task in Python programming. This operation is useful when working with data represented as a list of dictionaries, and it allows for a more streamlined and refined dataset. In this article, we will explore three concise methods to achieve this task using Python Example: Inp 3 min read Python Remove Item from Dictionary by Key A dictionary in Python is a mutable and dynamic data type that provides a flexible way to access and manipulate data. As distinct from a list or a tuple, where elements are accessed via indices, a dictionary leverages a unique key representing each item. In this article, we will see how to remove items from the dictionary by key in Python. Remove I 3 min read Python | Ways to remove a key from dictionary Dictionary is used in manifold practical applications such as day-day programming, web development, and AI/ML programming as well, making it a useful container overall. Hence, knowing shorthands for achieving different tasks related to dictionary usage always is a plus. This article deals with one such task of deleting/removing a dictionary key-val 8 min read Python Remove Key from Dictionary if Exists Dictionaries in Python are versatile data structures that allow you to store and manipulate key-value pairs. At times, you may need to remove a key from a dictionary if it exists. In this article, we will explore three different methods to achieve this task: using the pop() method, using the del statement, and employing dictionary comprehension. Py 3 min read Loop Through a List using While Loop in Python In Python, the while loop is a versatile construct that allows you to repeatedly execute a block of code as long as a specified condition is true. When it comes to looping through a list, the while loop can be a handy alternative to the more commonly used for loop. In this article, we'll explore four simple examples of how to loop through a list us 3 min read Difference between for loop and while loop in Python In this article, we will learn about the difference between for loop and a while loop in Python. In Python, there are two types of loops available which are 'for loop' and 'while loop'. The loop is a set of statements that are used to execute a set of statements more than one time. For example, if we want to print "Hello world" 100 times then we ha 4 min read How to Initialize a Dictionary in Python Using For Loop When you want to create a dictionary with the initial key-value pairs or when you should transform an existing iterable, such as the list into it. You use string for loop initialization. In this article, we will see the initialization procedure of a dictionary using a for loop. Initialize Python Dictionary Using For LoopA Dictionary is a collection 3 min read How to Store Values in Dictionary in Python Using For Loop In this article, we will explore the process of storing values in a dictionary in Python using a for loop. As we know, combining dictionaries with for loops is a potent technique in Python, allowing iteration over keys, values, or both. This discussion delves into the fundamentals of Python dictionaries and provides a demonstration of how to effect 3 min read How to Access Dictionary Values in Python Using For Loop A dictionary is a built-in data type in Python designed to store key-value pairs of data. The most common method to access values in Python is through the use of a for loop. This article explores various approaches to accessing values in a dictionary using a for loop. Access Dictionary Values in Python Using For LoopBelow, we are explaining the exa 2 min read Create Dynamic Dictionary Python using for Loop A for loop may be used to cycle over a collection of keys and values in Python to generate a dynamic dictionary. With this method, we may create dictionaries on the fly depending on specific requirements or information. In this article, we will see how to create a dynamic dictionary in Python using a for loop. Python Create a Dynamic Dictionary Usi 3 min read How to Create List of Dictionary in Python Using For Loop In Python programming, creating a list of dictionaries is a common task, particularly when dealing with structured data. In this article, we will discuss various approaches to create a list of dictionaries in Python using a for loop. Create a List of Dictionary in Python Using For LoopBelow are some of the ways by which we can create List of Dictio 3 min read Get Values from Dictionary in Python Using For Loop Dictionaries in Python are versatile data structures that allow you to store and retrieve key-value pairs efficiently. Accessing the values within a dictionary is a common operation, and Python provides multiple ways to achieve this using a for loop. In this article, we will explore some commonly used methods to extract values from a dictionary usi 3 min read Update a Dictionary in Python using For Loop Updating dictionaries in Python is a common task in programming, and it can be accomplished using various approaches. In this article, we will explore different methods to update a dictionary using a for loop. Update a Dictionary in Python Using For Loop in PythonBelow are some of the approaches by which we can update a dictionary in Python by usin 3 min read Python Dictionary with For Loop Combining dictionaries with for loops can be incredibly useful, allowing you to iterate over the keys, values, or both. In this article, we'll explore Python dictionaries and how to work with them using for loops in Python. Understanding Python DictionariesIn this example, a person is a dictionary with three key-value pairs. The keys are "name," "a 2 min read Adding Items to a Dictionary in a Loop in Python In Python, we can dynamically add items to a dictionary within a loop using the dictionary's key-value assignment. In this article, we will learn how to add Items to a Dictionary in a Loop using Python Programming. Below is an example to understand the problem statement. Example:Input: keys = ['Name', 'Website', 'Topic', 'Founded']values = ['Geeksf 3 min read How to Loop Three Level Nested Python Dictionary We are given a three level nested Python Dictionary and our task is to loop through that three level nested Python dictionary. In this article, we will explore two different approaches Nested for loops and Recursion to Loop 3 Level Nested Dictionary Python. Loop Three Level Nested Dictionary PythonBelow are the possible approaches to Loop 3 Level N 3 min read Loop Through a Nested Dictionary in Python Working with nested dictionaries in Python can be a common scenario, especially when dealing with complex data structures. Iterating through a nested dictionary efficiently is crucial for extracting and manipulating the desired information. In this article, we will explore five simple and generally used methods to loop through a nested dictionary i 3 min read Python Program to create a List using custom key-value pair of a dictionary Given a dictionary list, the task here is to write a python program that can convert it to a dictionary with items from values of custom keys. Input : test_list = [{'gfg' : 1, 'is' : 4, 'best' : 6}, {'gfg' : 10, 'is' : 3, 'best' : 7}, {'gfg' : 9, 'is' : 4, 'best' : 2}, {'gfg' : 4, 'is' : 1, 'best' : 0}, {'gfg' : 6, 'is' : 3, 'best' : 8}], key, valu 4 min read Python - Extract target key from other key values Sometimes, while working with Python dictionaries, we can have a problem in which we need to extract particular key on basis of other matching record keys when there is exact match. Lets discuss certain ways in which this task can be performed. Method #1: Using loop + conditions This is one of the ways in which this task can be performed. In this, 11 min read Python - Filter key's value from other key Sometimes, while working with Python dictionary, we can have a problem in which we need to extract a value from dictionary list of the key on basis of some other key equality. This kind of problem is common in domains that include data, for e.g web development. Let's discuss certain ways in which this task can be performed. Input : test_list = [{'g 7 min read Python | Extract key-value of dictionary in variables Sometimes, while working with dictionaries, we can face a problem in which we may have just a singleton dictionary, i.e dictionary with just a single key-value pair, and require to get the pair in separate variables. This kind of problem can come in day-day programming. Let's discuss certain ways in which this can be done. Method #1: Using items() 5 min readArticle Tags :
- Python
- Python Programs
- Python dictionary-programs
- python-dict
Practice Tags :
- python
- python-dict
Trending in News
View More- How to Merge Cells in Google Sheets: Step by Step Guide
- How to Lock Cells in Google Sheets : Step by Step Guide
- #geekstreak2024 – 21 Days POTD Challenge Powered By Deutsche Bank
We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy
