w3resource

Python: Create a list by concatenating a given list which range goes from 1 to n

Python List: Exercise - 35 with Solution

Write a Python program to create a list by concatenating a given list which range goes from 1 to n.

Python: Create a list by concatenating a given list which range goes from 1 to n

Sample Solution:-

Python Code:

my_list = ['p', 'q']
n = 4
new_list = ['{}{}'.format(x, y) for y in range(1, n+1) for x in my_list]
print(new_list)

Sample Output:

['p1', 'q1', 'p2', 'q2', 'p3', 'q3', 'p4', 'q4'] 

Flowchart:

Flowchart: Create a list by concatenating a given list which range goes from 1 to n

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 using Sieve of Eratosthenes method for computing primes upto a specified number.
Next: Write a Python program to get variable unique identification number or string.

What is the difficulty level of this exercise?

Test your Python skills with w3resource's quiz



Python: Tips of the Day

Merges two or more lists into a list of lists, combining elements from each of the input lists based on their positions

Example:

def tips_merge(*args, fill_value=None):
  max_length = max([len(lst) for lst in args])
  result = []
  for i in range(max_length):
    result.append([
      args[k][i] if i < len(args[k])
	  else fill_value for k in range(len(args))
    ])
  return result
print(tips_merge(['x', 'y'], [1, 2], [True, False])) 
print(tips_merge(['x'], [1, 2], [True, False])) 
print(tips_merge(['x'], [1, 2], [True, False], fill_value = '_')) 

Output:

[['x', 1, True], ['y', 2, False]]
[['x', 1, True], [None, 2, False]]
[['x', 1, True], ['_', 2, False]]