In this blog post, we will discuss how to remove a key from a Python dictionary. This is a very common task that you may need to perform in your own code.
We will show two different methods for doing this, and we will also provide some examples.
Remove a Key from a Python Dictionary
Let’s get begin!
The first method we will discuss is the dictionary.pop() method. This method takes two arguments, the key to be removed and a default value.
The default value is returned if the key is not found in the dictionary.
For Example
let’s say we have a dictionary with two keys, “foo” and “bar”. We can remove “foo” from the dictionary like this:
d = {'foo': 42, 'bar': 43}
d.pop('foo')
print(d)
This would print out: {‘bar’: 43}
As you can see, the pop() method removes the specified key from the dictionary and returns its value. If no default value is provided, and the key is not found in the dictionary, a KeyError will raise.
The second method we will discuss is the del keyword. This keyword is very helpful to delete a key from a dictionary.
For Example
let’s say we have a dictionary with two keys, “foo” and “bar”. We can remove “foo” from the dictionary like this:
d = {'foo': 42, 'bar': 43}
del d['foo']
print(d)
This would print out: {‘bar’: 43}
As you can see, using the del keyword deletes the specified key from the dictionary. If the key is not found in the dictionary, a KeyError will raise.
That’s all there is to removing keys from dictionaries in Python! We hope you found this blog post helpful.
If you have any questions, please feel free to leave a comment below and we will do our best to answer them. Thanks for reading!
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