Specifically to answer "is there a one line way of doing this?" if 'key' in my_dict: del my_dict['key']

And if you need to catch errors where you pop a value that isn't in the dictionary, use lambda inside map() like this: map(lambda x: myDict.pop(x,None), ['a', 'c', 'e']) It took me some time to figure out what exactly my_dict.pop("key", None) is doing. So I'll add this as an answer to save others googling time: pop(key[, default]) The key doesn’t exist and a default value is provided, in which case, the default value is returned. Python also provides the delkeyword to remove a key from a dictionary. Using the delkeyword is a less safe approach, as there is not way to simply provide a default_value, as you can with the .pop()method.Output: The dictionary before performing remove is : {'Anuradha': 21, 'Haritha': 21, 'Arushi': 22, 'Mani': 21}

One case where dict.pop() may be useful is if you want to create a new dictionary with the popped key-value pairs, effectively splitting a dictionary into two in one for-loop. new_dict = {k: v for k in lst if (v:=my_dict.pop(k, 'NULL')) != 'NULL'} The difference between del and pop is that, using pop() method, we can actually store the key's value if needed, like the following: myDict = {'one': 100, 'two': 200, 'three': 300} Let’s see how we can use the Python dictionary .pop()method to remove a key from our dictionary: # Delete a key using .pop() Anuradha': 21, 'Mani': 21, 'Haritha': 21} How to Delete all Keys from a Dictionary? Method 1: Delete all Keys from a Dictionary using the delIn this tutorial, you’ll learn how to safely remove keys from a Python dictionary. By safely, I mean that the code will not throw an error, should the key not actually exist in the dictionary. You’ll learn how to do this using the .pop()method, the delkeyword, as well as dictionary comprehensions. Finally, you’ll learn how to delete multiple keys from a dictionary in Python. Let’s get started! This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (i.e. my_dict.pop('key')) and key does not exist, a KeyError is raised. You can use a dictionary comprehension to create a new dictionary with that key removed: >>> my_dict = {k: v for k, v in my_dict.items() if k != 'key'} With that many trinkets, some are going to be more helpful than others. Some, like the Paper Clip, can be greatly beneficial to players in their Binding of Isaac runs. Others, like the Cursed Skull, can instead make things far more difficult. I want to remove a key from a dictionary if it is present. I currently use this code: if key in my_dict:

If we want to be able to safelyremove a key from a dictionary, meaning that no error is returned, we can pass in a default value into our .pop()method. A good default value would be to return None, as it allows us to simply move on. # Delete a key that doesn't exist using .pop() Marc Maxmeister's post discusses this but creates an unnecessary (imo) list while doing so. You can simply use a for-loop and throw away the popped values. my_dict = {'a': 1, 'b': 2, 'c': 3, 'd': 4} The Python .pop()method is a very useful method that allows us to get a dictionary item and remove its key from the dictionary. Now, let’s see what happens when we try to remove a key that doesn’t exist: # Delete a key that doesn't exist using .pop()Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness Without the if statement, the code will raise KeyError if the key is not present. How can I handle this more simply? The key exists in the dictionary, in which case, the key’s value is returned and the key is removed from the dictionary

Let’s see how we can pass in a list of different keys to delete, including some that don’t exist: # How to remove multiple keys from a Python dictionary A drop key and crescent key are required to operate their respective Fireman switch and are available separately. Features Applies to: SQL Server Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) We can see that using the .pop()method allows us to safely remove a key from a Python dictionary. Now, let’s see how we can use the delkeyword to remove a key from a dictionary. Use Python del to Remove a Key from a DictionaryOutput: dictionary before performing remove is : {'sai': 22, 'kiran': 21, 'vinod': 21, 'sangam': 21} The auxiliary space required for this code is O(1), as we are only modifying the existing dictionary and not creating any new data structures. Method 2: Remove a Key from a Dictionary using pop() Now that you have an understanding of what dictionaries are, let’s see how we can use Python to remove a key from a dictionary. Use Python .pop() to Delete a Key from a Dictionary Because the comprehension uses an ifstatement, we can say that this is a safe method of deleting a key from a Python dictionary. How to Remove Multiple Keys from a Python Dictionary