Python: Remove None value from a given list

Python List: Exercise - 166 with Solution

Write a Python program to remove the 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:

Flowchart:

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:

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:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to split a given list into specified sized chunks.
Next: Write a Python program to convert a given list of strings into list of lists.