# Python: Extract every first or specified element from a given two-dimensional list

## Python List: Exercise - 144 with Solution

Write a Python program to extract every first or specified element from a given two-dimensional list.

**Sample Solution**:

**Python Code:**

```
def specified_element(nums, N):
result = [i[N] for i in nums]
return result
nums = [
[1,2,3,2],
[4,5,6,2],
[7,1,9,5],
]
print("Original list of lists:")
print(nums)
N = 0
print("\nExtract every first element from the said given two dimensional list:")
print(specified_element(nums, N))
N = 2
print("\nExtract every third element from the said given two dimensional list:")
print(specified_element(nums, N))
```

Sample Output:

Original list of lists: [[1, 2, 3, 2], [4, 5, 6, 2], [7, 1, 9, 5]] Extract every first element from the said given two dimensional list: [1, 4, 7] Extract every third element from the said given two dimensional list: [3, 6, 9]

**Flowchart:**

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**Python Code Editor:**

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**Previous:** Write a Python program to get the frequency of the elements in a given list of lists.

**Next:** Write a Python program to generate a number in a specified range except some specific numbers.

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## Python: Tips of the Day

**Floor Division:**

When we speak of division we normally mean (/) float division operator, this will give a precise result in float format with decimals.

For a rounded integer result there is (//) floor division operator in Python. Floor division will only give integer results that are round numbers.

print(1000 // 300) print(1000 / 300)

Output:

3 3.3333333333333335

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