Python - Remove Set Items
Remove Item
To remove an item in a set, use the remove(), or the discard() method.
Example
Remove "banana" by using the remove()
method:
thisset = {"apple", "banana", "cherry"}
thisset.remove("banana")
print(thisset)
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Note: If the item to remove does not exist, remove() will raise an error.
Example
Remove "banana" by using the discard()
method:
thisset = {"apple", "banana", "cherry"}
thisset.discard("banana")
print(thisset)
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Note: If the item to remove does not exist, discard() will
NOT raise an error.
You can also use the pop() method to remove
an item, but this method will remove the last item. Remember that sets
are unordered, so you will not know what item that gets removed.
The return value of the pop() method is the
removed item.
Example
Remove the last item by using the pop()
method:
thisset = {"apple", "banana", "cherry"}
x =
thisset.pop()
print(x)
print(thisset)
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Note: Sets are unordered, so when using the pop() method,
you do not know which item that gets removed.
Example
The clear()
method empties the set:
thisset = {"apple", "banana", "cherry"}
thisset.clear()
print(thisset)
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Example
The del keyword will delete the set
completely:
thisset = {"apple", "banana", "cherry"}
del
thisset
print(thisset)
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