4 Ways to find index value of all list items in Python

Python, List

In this post, we are going to learn 4 Ways to find index value of all list items in Python. We will learn this with the help of examples.

1.Simple Method using loop

The simple method to Find index-value of all list items is for loop.We are iterating over the list items and printing value and index.

LangList = ['C#', 'python', 'C', 'Java', 'Go']
 
# simple method to get the index of an item
  

print ("LangList index-value are : ") 

for j in range(len(LangList)): 
    print (j  ,   end = " ") 
    print (LangList[j])

Output

LangList index-value are : 

0 C#
1 python
2 C
3 Java
4 Go

2. Using list comprehension

In this code example, we are using the list comprehension to find the index and value of all items of python list.

LangList = ['C#', 'python', 'C', 'Java', 'Go']
    
# get index and value by list comprehension 

print ("LangList index-value are : \n") 

print ([list((j, LangList[j])) for j in range(len(LangList))])

Output

LangList index-value are : 

[[0, 'C#'], [1, 'python'], [2, 'C'], [3, 'Java'], [4, 'Go']]

3. Using enumerate()

In this code example we are using the enumerate() method to get the index and value of an item in python list.

LangList = ['C#', 'python', 'C', 'Java', 'Go']
  
# get index and value by using enumerate

print ("LangList index-value are : \n") 

for index, value in enumerate(LangList): 
  
    print(index, value)

Output

LangList index-value are : 

0 C#
1 python
2 C
3 Java
4 Go

4. Using Zip() method

In this code example we are using the zip() method to get the index and value of an item in python list.

LangList = ['C#', 'python', 'C', 'Java', 'Go']
   
# get index and value by using zip
print ("LangList index-value are : \n") 
for index, value in zip(range(len(LangList)), LangList): 
      
    print(index, value)

Output

LangList index-value are : 

0 C#
1 python
2 C
3 Java
4 Go

5.Using list.index() Method

In this code example, we are using the list built in method index() to get the index of an item.

LangList = ['C#', 'python', 'C', 'Java', 'Go']

item_to_find = 'C#'
   
# get index and value by using zip
print("Index of item c# :",LangList.index(item_to_find))

Output

Index of item c# : 0

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