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Assume you have a list
>>> m = ['a','b','c'] I'd like to make a new list n that has everything except for a given item in m (for example the item 'a'). However, when I use
>>> m.remove('a') >>> m m = ['b', 'c'] the original list is mutated (the value 'a' is removed from the original list). Is there a way to get a new list sans-'a' without mutating the original? So I mean that m should still be [ 'a', 'b', 'c' ], and I will get a new list, which has to be [ 'b', 'c' ].
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How to Remove an Element from a List Using the remove() Method in Python. To remove an element from a list using the remove() method, specify the value of that element and pass it as an argument to the method. remove() will search the list to find it and remove it.
There are three ways in which you can Remove elements from List: Using the remove() method. Using the list object's pop() method. Using the del operator.
To remove elements from ArrayList based on a condition or predicate or filter, use removeIf() method. You can call removeIf() method on the ArrayList, with the predicate (filter) passed as argument. All the elements that satisfy the filter (predicate) will be removed from the ArrayList.
I assume you mean that you want to create a new list without a given element, instead of changing the original list. One way is to use a list comprehension:
m = ['a', 'b', 'c'] n = [x for x in m if x != 'a'] n is now a copy of m, but without the 'a' element.
Another way would of course be to copy the list first
m = ['a', 'b', 'c'] n = m[:] n.remove('a') If removing a value by index, it is even simpler
n = m[:index] + m[index+1:] If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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