﻿ Python: Remove and print every third number from a list of numbers until the list becomes empty - w3resource

# Python: Remove and print every third number from a list of numbers until the list becomes empty

## Python Basic - 1: Exercise-3 with Solution

Write a Python program that removes and prints every third number from a list of numbers until the list is empty.

Visual Presentation:

Sample Solution:

Python Code :

``````# Define a function named 'remove_nums' that takes a list 'int_list' as a parameter.
def remove_nums(int_list):
# Set the starting position for removal to the 3rd element (0-based index).
position = 3 - 1
# Initialize the index variable to 0.
idx = 0
# Get the length of the input list.
len_list = len(int_list)

# Continue removing elements until the list is empty.
while len_list > 0:
# Calculate the new index based on the starting position and current index.
idx = (position + idx) % len_list
# Print and remove the element at the calculated index.
print(int_list.pop(idx))
# Decrement the length of the list.
len_list -= 1

# Create a list of numbers.
nums = [10, 20, 30, 40, 50, 60, 70, 80, 90]

# Call the 'remove_nums' function with the list of numbers.
remove_nums(nums)
``````

Sample Output:

```30
60
90
40
80
50
20
70
10
```

Explanation:

The above code defines a function "remove_nums()" that takes a list as input. It removes and prints elements from the list in a specific pattern until the list is empty. The pattern starts from the 3rd element and removes every 3rd element thereafter. The code then calls this function with a list of numbers and prints the removed elements.

Flowchart:

Python Code Editor :

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