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Python Code Samples

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

3 matches
OOP & classes easy

How to Convert Data Types in Python with a Helper Class

This code defines a beginner-friendly OOP helper class for common data conversions like string to list, list to dict, JSON string, and CSV row, with an advanced subclass for numeric casting.

oop classes data-conversion
Python 
class DataConverter:
    """A beginner-friendly helper class for common data conversions."""
    
    def __init__(self, data):
        self.data = data
    
    def to_list(self):
        """Convert string data (comma-separated) to a list."""
        if isinstance(self.data, str):
            return [item.strip() for…
14 0 Open
Modern tooling easy

Data Conversion Helper Functions in Python

A set of beginner-friendly helper functions to convert between JSON strings and Python data, parse dates, and read/write files using pathlib.

json datetime pathlib
Python 
from datetime import datetime
from pathlib import Path
import json

def to_json(data, indent=2):
    """Convert Python data to pretty-printed JSON string."""
    return json.dumps(data, indent=indent, default=str)

def from_json(json_string):
    """Parse JSON string back into Python data."""
    return json.loads(jso…
13 0 Open
Database scaling & optimization easy

How to Convert Data with Scaling for Database Optimization in Python

A beginner-friendly helper that normalizes and scales numeric fields in a list of dicts, reducing storage footprint for database efficiency.

data conversion database scaling
Python 
import json
from datetime import datetime

def convert_data(data: list[dict], scale_factor: int = 1) -> list[dict]:
    """Convert a list of dicts to a scaled, normalized format for database efficiency."""
    converted = []
    for row in data:
        normalized = {}
        for key, value in row.items():
          …
14 0 Open

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