# What is a nested list?
A **nested list** is a list whose elements are lists: 


# Example
Let `l` be the list and `l1`, `l2`, and `l3` be the sub lists:
```py
l1 = [1,2,3] 
l2 = [4,5,6] 
l3 = [7,8,9]

l = [[1,2,3],[4,5,6],[7,8,9]]
```

l = [[1,2,8], [3,5,5], [4,6,6]]

count=0

for i in l:
    for j in i:
        if(j%2==0):
            count=count+1
print(count)     

# Explanation
1) A nested list, `l`, is taken with sub-lists.

2) Count variable is used to count the number of even numbers in the list and is initialized to zero.

3) The nested `for` loop is used to access the elements in the list.

4) Variable `i` is used to access sub-lists in the list, and variable `j` is used to access elements in sub-list `i`.

5) Th even condition is checked with `j` and, if it is satisfied, the `count` value is incremented by one.

6) Finally, the #key# count value:represents the number of even numbers in a nested list #key#  is printed.

How to count a number of even integers in a nested list

A nested list's even integers are counted by iterating through sub-lists and incrementing a counter.

How to count a number of even integers in a nested list

What is a nested list?

Example

Code

Explanation