Finding the index of an item in a list: In this tutorial, we will learn how to find the index of a given item in a Python list. Learn with the help of examples.BySapna Deraje RadhakrishnaLast updated : June 26,
It will print the index value of an item from thelist_name. Example 1: # listlist=["Gwalior","Bhopal","Indore","Noida","Delhi","Ajmer"]# Now, using the index() to get the index# of "Inodre"Index_Value=list.index("Indore")# Printing the indexprint(Index_Value) Output: 2 2)...
PythonPython List Current Time0:00 / Duration-:- Loaded:0% In Python, list elements are arranged in sequence. We can access any element in the list using indexes. Python list index starts from 0. ADVERTISEMENT This article will discuss different methods to find the index of an item in th...
Then, we use thenp.where() functionto search for elements inmy_arraythat are equal totarget_element. Thenp.where()function returns a tuple with indices where the condition is true, and in this case, we access the first element of the tuple[0]to retrieve the matching indices. ...
The indexOf() method returns the index of the first occurrence of the specified element in the array, or -1 if the element is not found. Here is an example of how you can use the indexOf() method to find the index of an element in an int array: int[] array = {1, 2, 3, 4...
int selectedIndex = items.IndexOf(items.FindByText("需要查找匹配的item"));查找Value: string selectedValue = items.FindByText("需要查找匹配的item"); 上一篇ASP.NET泛型List的各种用法Skip、Take等 下一篇SQL、Linq、lamda表达式 同一功能不同写法 本文作者:一起来学python 本文链接:https://www.cnblogs....
Python -函数式"find"? 、、 我需要一个函数,它能够迭代集合,调用提供的函数,将集合的元素作为参数,并在从提供的函数中收到"True“时返回参数或其索引。大概是这样的: """Return first item in sequence whereif item_only: retur 浏览0提问于2010-03-03得票数 6 回答已采纳 ...
To find the index of the maximum element in an array, we usethenumpy.argmax()function. This function works with a list and can return the index of the maximum element. Example: importnumpyasnp lst=[1,4,8,9,-1]i=np.argmax(lst)print(i) ...
Python Code: # Define a function 'find_index' that takes a list 'nums' and a function 'fn' as input.deffind_index(nums,fn):# Use a generator expression to find the first index 'i' where 'fn(x)' is True for an element 'x' in 'nums'.returnnext(ifori,xinenumerate(nums)iffn(x...
Python program to find first index of value fast # Import numpyimportnumpyasnp# Creating an arrayarr=np.array([1,0,5,0,9,0,4,6,8])# Display original arrayprint("Original Array:\n",arr,"\n")# Finding index of a valueind=arr.view(bool).argmax() res=indifarr[ind]else-1# Displ...