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Python: Remove None value from a given list

Python List: Exercise - 166 with Solution

Write a Python program to remove None value from a given list.

Sample Solution-1:

Python Code:

def remove_none(nums):
    result = [x for x in nums if x is not None]
    return result
nums = [12, 0, None, 23, None, -55, 234, 89, None, 0, 6, -12]
print("Original list:")
print(nums)
print("\nRemove None value from the said list:")
print(remove_none(nums))

Sample Output:

Original list:
[12, 0, None, 23, None, -55, 234, 89, None, 0, 6, -12]

Remove None value from the said list:
[12, 0, 23, -55, 234, 89, 0, 6, -12]

Pictorial Presentation:

Python List: Remove None value from a given list.

Flowchart:

Flowchart: Remove None value from a given list.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:


Sample Solution-2:

Python Code:

def remove_none(nums):
    result =  list(filter(None, nums))
    return result
nums = [12, 0, None, 23, None, -55, 234, 89, None, 0, 6, -12]
print("Original list:")
print(nums)
print("\nRemove None value from the said list:")
print(remove_none(nums))

Sample Output:

Original list:
[12, 0, None, 23, None, -55, 234, 89, None, 0, 6, -12]

Remove None value from the said list:
[12, 23, -55, 234, 89, 6, -12]

Flowchart:

Flowchart: Remove None value from a given list.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:



Python Code Editor:

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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