I have the list [0, 1, 2, 3, 4]
I'd like to make it into [1, 2, 3, 4]
. How do I go about this?
Method 5: Remove Elements From Lists in Python using remove() The remove() function allows you to remove the first instance of a specified value from the list. This can be used to remove the list's top item.
We can use the remove() method of ArrayList container in Java to remove the first element. ArrayList provides two overloaded remove() method: remove(int index) : Accept index of the object to be removed. We can pass the first element's index to the remove() method to delete the first element.
Use the remove() Function to Remove All the Instances of an Element From a List in Python. The remove() function only removes the first occurrence of the element. If you want to remove all the occurrence of an element using the remove() function, you can use a loop either for loop or while loop.
Use del to remove an element by index, pop() to remove it by index if you need the returned value, and remove() to delete an element by value. The last requires searching the list, and raises ValueError if no such value occurs in the list.
You can find a short collection of useful list functions here.
list.pop(index)
>>> l = ['a', 'b', 'c', 'd'] >>> l.pop(0) 'a' >>> l ['b', 'c', 'd'] >>>
del list[index]
>>> l = ['a', 'b', 'c', 'd'] >>> del l[0] >>> l ['b', 'c', 'd'] >>>
These both modify your original list.
Others have suggested using slicing:
Also, if you are performing many pop(0)
, you should look at collections.deque
from collections import deque >>> l = deque(['a', 'b', 'c', 'd']) >>> l.popleft() 'a' >>> l deque(['b', 'c', 'd'])
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