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How to Remove a Key From a Dictionary in Python [All Method]️

Q: What is the best way to approach this problem?

Check out this blog code to learn how to fix errors.

Richard ParkerFebruary 8, 2022

1 minute read

How to Remove a Key From a Dictionary in Python [All Method]️ — How to Remove a Key From a Dictionary in Python All Method

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What are some ways we can remove a key from a dictionary?

Using `del`

If we know the key exists for sure, we can run del.

del some_dict['key']

If the key doesn’t exist, this will return a KeyError.

We can circumvent this issue with a try except.

try:
    del some_dict['key']
except KeyError:
    pass

Using `pop()`

If we don’t know whether the key exists or need the deleted value, we can use pop().

How to Fix the “Property does not exist on type {}” Error in TypeScript 📌[All Method]️

This will default the return value to None if the key doesn’t exist.

deleted_value = some_dict.pop('key', None)

Compared to del with the try except, pop() is a good deal faster when the key doesn’t exist since raising an exception is quite slow.

On the other hand, del with the try except is marginally faster when a key exists.

Revise the code and make it more robust with proper test case and check an error there before implementing into a production environment.
If you have any questions or get stuck, please dont hesitate to reach out to me for help.