Search For Value In List Python
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Search For Value In List Python
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Find if an element exists in the list using the count function We can use the in built Python List method count to check if the passed element exists in the List If the passed element exists in the List the count method will show the number of times it occurs in the entire list import bisect from timeit import timeit def bisect_search(container, value): return ( index if (index := bisect.bisect_left(container, value)) < len(container) and container[index] == value else -1 ) data = list(range(1000)) # value to search value = 666 # times to test ttt = 1000 t1 = timeit(lambda: data.index(value), number=ttt) t2 = timeit .
Search For Value In List PythonIf your list and the value you are looking for are all numbers, this is pretty straightforward. If strings: look at the bottom: -Let "n" be the length of your list. -Optional step: if you need the index of the element: add a second column to the list with current index of elements (0 to n-1) - see later. The best way is probably to use the list method index For the objects in the list you can do something like def eq self other return self Value other Value with any special processing you need You can also use a for in statement with enumerate arr Example of finding the index of an item that has value 100