15 Minimalist Python Code Snippets for Beginners

This article presents fifteen concise Python code examples that demonstrate common programming tasks, aimed at beginners seeking quick, practical solutions.

1. Print "Hello, World!" – The classic first program can be executed with a single line:

print("Hello, World!")

2. Swap two variables – Python's tuple unpacking swaps values without a temporary variable:

a, b = 5, 10

a, b = b, a

print(a, b)

3. Sum elements of a list – Use the built‑in sum function:

nums = [1, 2, 3, 4, 5]

print(sum(nums))

4. Find maximum and minimum in a list – max and min return the largest and smallest values:

nums = [10, 5, 20, 3]

print(max(nums), min(nums))

5. Check if a string is empty – The boolean value of a string combined with not does the check:

s = ""

print(not s)

6. Generate a list of numbers in a range – Combine range with list :

print(list(range(1, 11)))

7. Count occurrences of a character in a string – Use the count method:

s = "hello world"

print(s.count('l'))

8. Remove duplicates from a list – Convert the list to a set :

nums = [1, 2, 2, 3, 3, 3]

print(set(nums))

9. One‑line conditional expression – The ternary operator returns a value based on a condition:

x = 10

result = "even" if x % 2 == 0 else "odd"

print(result)

10. Iterate over a list and print each element – A simple for loop:

fruits = ["apple", "banana", "cherry"]

for fruit in fruits: print(fruit)

11. Split a string into a list of words – Use the split method:

s = "hello world python"

print(s.split())

12. Concatenate two lists – The + operator merges them:

list1 = [1, 2, 3]

list2 = [4, 5, 6]

print(list1 + list2)

13. Compute the factorial of a number – A recursive function in a single line:

def factorial(n): return 1 if n == 0 else n * factorial(n - 1)

print(factorial(5))

14. Reverse a list – Slice notation with a step of -1 :

nums = [1, 2, 3, 4, 5]

print(nums[::-1])

15. Read all lines from a file – Use with and readlines :

with open('test.txt', 'r') as f: print(f.readlines())

At the end of the article, readers are invited to scan a QR code to receive a free Python course and a collection of learning materials, including e‑books, tutorials, project templates, and source code.