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The best and fast way to obtain the content of the last index of a list is using -1 for number of index , for example: my_list = [0, 1, 'test', 2, 'hi'] print(my_list[-1]) Output is: 'hi'. Index -1 shows you the last index or first index of the end. But if you want to get only the last index, you can obtain it with this function:
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BetaHowever, using the negative index -1 allows you to access the last element of the array's length easily. Method 2: Slicing. Slicing is a Python feature that allows you to get a portion of an array. You can get the last element of an array by setting a negative index without an explicit end index. Here is an example: my_array = [10, 20, 30, 40 ...
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Betalen(w) - 1 adjusts the reversed index back to the original list index, giving the position of the last "apple" element. Using a Loop. We can iterate through the list from the end to the beginning, checking for the element. The index of first match we encounter will be last occurrence of the element in the original list. Python
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BetaFind the Last Index Position of an Item in a Python List. In this section, you’ll learn how to find the last index position of an item in a list. There are different ways to approach this. Depending on the size of your list, you may want to choose one approach over the other. For smaller lists, let’s use this simpler approach:
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BetaWhere n is the length of the array, n - 1 will be the index value of the last item. Note that you can also access each individual element using negative indexing. With negative indexing, the last element would have an index of -1, the second to last element would have an index of -2, and so on.
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BetaPython's boolean operators return the last thing evaluated, not a strict True/False/None result. Similarly, option 1 is dangerous, because if mylist[-1] is falsy (numerically zero, an empty collection, None , etc.) then the result will be 'default' even though mylist[-1] was available (this flaw is the main reason ontrue if condition else onfalse exists).
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BetaExplanation:len(a) - 1 gives the index of the last item, which is then used to retrieve the value. 3. Using len() with Indexing. We can also find the last element by using len() function. Find length of the list and then subtracting one to get the index of the last element. Python
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BetaIn Python, arrays support negative indexing where the last element of the array is accessed with index -1, the second-to-last element with index -2 and so on. Here's an example: Here's an example: Python
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BetaYou can read up on Python slicing notation here: Understanding slicing NumPy slicing is an extension of that. The NumPy tutorial has some coverage: Indexing, Slicing and Iterating .
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BetaList indexes of -x mean the xth item from the end of the list, so n[-1] means the last item in the list n.Any good Python tutorial should have told you this. It's an unusual convention that only a few other languages besides Python have adopted, but it is extraordinarily useful; in any other language you'll spend a lot of time writing n[n.length-1] to access the last item of a list.
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