d = { ... } for k in list(d.keys()): d.pop(k, None) The important bit is the list(d.keys(). Instead of iterating over the dict itself, that creates a new separate list of keys and iterates over that. Answer from member_of_the_order on reddit.com
Reddit
reddit.com › r/learnpython › is there a way to remove items/keys from a dict in a loop?
r/learnpython on Reddit: Is there a way to remove items/keys from a dict in a loop?
May 27, 2022 -
When I try to do this I get an error saying that the size of the dict has changed during iteration. Is it possible to achieve this without creating another dict?
Thanks!
Top answer 1 of 12
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d = { ... } for k in list(d.keys()): d.pop(k, None) The important bit is the list(d.keys(). Instead of iterating over the dict itself, that creates a new separate list of keys and iterates over that.
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dic1 = {'a':1 , 'b':2 , 'c':3} for key in dic1.copy(): del dic1[key] This is how I tackled it when experiencing this problem
Looping through a dictionary to check if key exists in a list of lists Jan 16, 2024
r/learnpython 2y ago
GeeksforGeeks
geeksforgeeks.org › python › python-remove-key-from-dictionary-list
Remove Key from Dictionary List - Python - GeeksforGeeks
July 12, 2025 - Explanation: Each dictionary in the list is checked for the key and if it exists then the del statement removes the key-value pair.
How do I delete a list of keys from a dictionary?
Hello all, I have a doubt about how to delete a list of keys from a dictionary. An example: List ["1", "2", "5", "7", "9"] Dictionary {"1" : "Value1", "2" : "Value2", "3" : "Value3", "4" : "Value4", "5" : "Value5", "6" : "Value6", "7" : "Value7", "8" : "Value8", "9" : "Value9"} OK, now I have ... More on community.appinventor.mit.edu
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March 12, 2021python - Removing key values pairs from a list of dictionaries - Stack Overflow
There is no point in producing the list at all, that's just needless memory and CPU time being consumed, not to mention confusing to a future maintainer. 2012-11-06T15:47:06.637Z+00:00 ... Assuming that all dictionaries contain the same keys, you could also convert it to a pandas DataFrame, delete ... More on stackoverflow.com
Is there a way to remove items/keys from a dict in a loop?
d = { ... } for k in list(d.keys()): d.pop(k, None) The important bit is the list(d.keys(). Instead of iterating over the dict itself, that creates a new separate list of keys and iterates over that. More on reddit.com
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May 27, 2022How to remove empty dictionary value from list?
Yes the quotes (empty string) are considered values and you would use an if statement. Probably what I would suggest is a list comprehension:
[d for d in mylist if d['name']]
This creates a new list with each dictionary value in there if the value corresponding to the key 'name' is not an empty string. The empty string is a Falsey value in Python, so instead of checking if d['name'] != '' (which is also totally valid) you can just ask if d['name'].
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January 28, 2019 Top answer 1 of 16
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Using dict.pop:
d = {'some': 'data'}
entries_to_remove = ('any', 'iterable')
for k in entries_to_remove:
d.pop(k, None)
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Using Dict Comprehensions
final_dict = {key: value for key, value in d.items() if key not in [key1, key2]}
where key1 and key2 are to be removed.
In the example below, keys "b" and "c" are to be removed & it's kept in a keys list.
>>> a
{'a': 1, 'c': 3, 'b': 2, 'd': 4}
>>> keys = ["b", "c"]
>>> print {key: a[key] for key in a if key not in keys}
{'a': 1, 'd': 4}
>>>
freeCodeCamp
freecodecamp.org › news › python-remove-key-from-dictionary
Python Remove Key from Dictionary – How to Delete Keys from a Dict
February 22, 2023 - You can easily delete multiple keys from a dictionary using Python. The .pop() method, used in a loop over a list of keys, is the safest approach for doing this.
datagy
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Python: Remove Key from Dictionary (4 Different Ways) • datagy
December 20, 2022 - 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_dict = {'John': 32, 'Mel': 31, 'Nik': 33, 'Katie': 32, 'James': 29, 'Matt': 35} keys = ['John', 'Mary', 'Mel'] for key in keys: a_dict.pop(key, None) print(a_dict) # Returns: {'Nik': 33, 'Katie': 32, 'James': 29, 'Matt': 35}
GeeksforGeeks
geeksforgeeks.org › python › python-remove-multiple-keys-from-dictionary
Python - Remove Multiple Keys from Dictionary - GeeksforGeeks
July 12, 2025 - dictionary comprehension iterates through the dictionary using .items() and includes only the keys not present in key_rmv. This method is efficient as it avoids modifying the dictionary directly and works well for larger dictionaries.
W3Schools
w3schools.com › python › python_dictionaries_remove.asp
Python - Remove Dictionary Items
The del keyword can also delete the dictionary completely:
Medium
medium.com › @python-javascript-php-html-css › efficiently-removing-keys-from-python-dictionaries-5edc9a4ab9b3
Remove Keys from Python Dictionaries Effectively
August 24, 2024 - The first script uses the dictionary.pop(key, None) method, which attempts to remove the specified key from the dictionary. If the key is not found, it returns None instead of raising a KeyError.
Note.nkmk.me
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Remove an Item from a Dictionary in Python: pop, popitem, clear, del | note.nkmk.me
April 27, 2025 - In Python, you can remove an item (key-value pair) from a dictionary (dict) using the pop(), popitem(), clear() methods, or the del statement. You can also remove items based on specific conditions us ...
Sling Academy
slingacademy.com › article › python-delete-items-from-a-dictionary-using-a-list-of-keys
Python: Delete items from a dictionary using a list of keys (4 ways) - Sling Academy
The most intuitive way to delete items from a dictionary using a list of keys is by iterating through the list and using the del keyword for each key.
w3resource
w3resource.com › python-exercises › dictionary › python-data-type-dictionary-exercise-12.php
Python: Remove a key from a dictionary - w3resource
June 28, 2025 - # Create a dictionary 'myDict' with key-value pairs. myDict = {'a': 1, 'b': 2, 'c': 3, 'd': 4} # Print the original dictionary 'myDict'. print(myDict) # Check if the key 'a' exists in the 'myDict' dictionary. if 'a' in myDict: # If 'a' is in the dictionary, delete the key-value pair with the key 'a'. del myDict['a'] # Print the updated dictionary 'myDict' after deleting the key 'a' (if it existed).
Delft Stack
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How to Remove One or Multiple Keys From a Dictionary in Python | Delft Stack
February 2, 2024 - The original dictionary is: {'Article': ... also remove multiple keys at once. For that, we will declare a list named keys_to_delete with all the keys that need to be deleted....
AskPython
askpython.com › python › dictionary › delete-a-dictionary-in-python
Ways to Delete a Dictionary in Python - AskPython
February 16, 2023 - In the context of the deletion of key-value pairs from a dictionary, the items() method can be used to provide the list of key-value pairs to the dict comprehension as an iterable.
Spark By {Examples}
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Remove Multiple keys from Python Dictionary - Spark By {Examples}
May 31, 2024 - How to remove multiple keys from Python Dictionary? To remove multiple keys you have to create a list or set with the keys you want to delete from a
Career Karma
careerkarma.com › blog › python › python remove key from a dictionary: a complete guide
Python Remove Key from a Dictionary: A Complete Guide: A Complete Guide | Career Karma
December 1, 2023 - Both the pop() method and the del keyword let you remove keys from a dictionary. The pop() method is generally more useful because it is capable of returning a default value if a key is not deleted.
Naukri
naukri.com › code360 › library › remove-key-from-dictionary-in-python
Remove Key from Dictionary in Python
Almost there... just a few more seconds
Educative
educative.io › answers › how-to-remove-a-key-value-pair-from-a-dictionary-in-python
How to remove a key value pair from a dictionary in Python
We can delete multiple key-value pairs from the dictionary using the pop() method in a for loop. First, we declare an array of keys that need to be removed from the dictionary, then use a loop to iterate, and lastly remove them from the dictionary ...
Top answer 1 of 6
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If you really want to use a list comprehension, combine it with a dict comprehension:
[{k: v for k, v in d.iteritems() if k != 'mykey1'} for d in mylist]
Substitute .iteritems() for .items() if you are on python 3.
On python 2.6 and below you should use:
[dict((k, v) for k, v in d.iteritems() if k != 'mykey1') for d in mylist]
as the {key: value ...} dict comprehension syntax was only introduced in Python 2.7 and 3.
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def new_dict(old_dict):
n = old_dict.copy()
n.pop('mykey1',None)
return n
new_list_of_dict = map(new_dict,list_of_dict)
or
new_list_of_dict = [ new_dict(d) for d in list_of_dict ]
Rather than using del, I opted for dict.pop since pop will suppress the KeyError if the key doesn't exist.
If you really only want to get certain keys, this becomes a bit easier.
from operator import itemgetter
tuple_keys = ('key1','key2','key3')
get_keys = itemgetter(*tuple_keys)
new_dict_list = [ dict(zip(tuple_keys,get_keys(d)) for d in old_dict_list ]
which raises KeyError if the keys aren't in the old dict
Or:
new_dict_list = [ dict( (k,d.get(k,None)) for k in tuple_keys ) for d in old_dict_list ]
which will also add key:None if key isn't in the old dict. If you don't want that None, you could do:
new_dict_list = [ dict( (k,d[k]) for k in tuple_keys if k in d) for d in old_dict_list ]
Depending on what percent of the dictionary you're including/excluding and the size of the dictionaries, this might be slightly faster than the solution by @MartijnPieters.
Codefinity
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Learn Removing Dictionary Entries in Python | Section
In Python, you can remove keys from a dictionary using the del keyword. This allows you to delete specific entries or even clear the entire dictionary.