Reference library

Python Code Samples

Copy-ready Python snippets by topic and difficulty — short, focused, and runnable in the browser editor.

3 matches
Strings & text easy

How to Round Numbers with f-strings in Python

Round numbers directly inside f-string expressions using the built-in round() function for clean, readable output formatting.

f-string rounding formatting
Python 
def main():
    # Values to format with expression-based rounding
    price = 19.995
    tax_rate = 0.0825
    distance = 1234.56789

    # Round inside the f-string expression using round()
    print(f"Price rounded to cents: ${round(price, 2)}")

    # Combine rounding with arithmetic inside the expression
    total…
12 0 Open
Strings & text easy

How to Split Lines and Strip Blank Lines in Python

Split a multiline string into non-empty lines and strip surrounding whitespace using a list comprehension.

string splitlines strip
Python 
import sys

def split_and_strip(text):
    """Split text into non-blank lines, stripping whitespace."""
    return [line.strip() for line in text.splitlines() if line.strip()]

if __name__ == "__main__":
    sample_text = """  First line   
    
    Second line	
      
    Third line  """
    result = split_and_strip(…
12 0 Open
Strings & text easy

Python: Replace Spaces with Hyphens for Slug

Transform a string by stripping surrounding whitespace and replacing each space with a hyphen to create a simple slug.

strings replace slug
Python 
def slugify(text):
    return text.strip().replace(" ", "-")

if __name__ == "__main__":
    title = "Hello World Python Example"
    result = slugify(title)
    print(result)
12 0 Open

Browse by section

Each section groups closely related Python snippets.

Guide: free Python code samples library

Copy-ready Python snippets for learners and developers

PythonSkillset code samples are short, focused examples organised by topic and difficulty. Every snippet is server-rendered HTML — readable by search engines and easy to copy. Open any sample, read the notes, copy the code, then press Try in editor to run it in the browser with Pyodide.

How to use this library

  1. Pick a topic section — strings, lists, files, functions, and more
  2. Open a sample, read How it works, and copy the code block
  3. Run it in the IDE, tweak values, then take a related quiz or tutorial lesson

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Related coding tools

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup.