Newsletter Archive

📅 Today’s Picks

Faker: Generate Realistic Test Data with One Command

Problem
Creating realistic test data manually is time-consuming.
Solution
Faker generates authentic-looking test data with single-line commands.
Key features:

Realistic names, emails, and addresses
50+ language locales (en_US, vi_VN, etc.)
One-line profile generation with custom fields

📖 View Full Article

🧪 Run code

⭐ View GitHub

Persist Agent State Across Restarts with LangGraph Checkpointing

Problem
Checkpointing is a persistence layer that maintains agent workflow state between executions.
Without checkpointing, agents lose all state when systems restart, requiring users to start over with new conversations.
Solution
With LangGraph’s checkpointing, you can persist agent state to databases, enabling:

Conversation continuity through restarts
Same conversation accessible from any application instance
Flexible persistence with PostgreSQL, SQLite, or MongoDB backends

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

git-who
[Data Engineer]
– Git blame for file trees – visualize code authorship and contributions across entire directory structures

nanochat
[LLM]
– The best ChatGPT that $100 can buy – minimal, hackable LLM implementation with full training pipeline

ManimML
[ML]
– Animate and visualize machine learning concepts with Manim – create neural network visualizations and educational content

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Build Self-Documenting Regex with Pregex

Problem
Regex patterns like [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,} are difficult to read and intimidating.
Team members without regex expertise might struggle to understand and modify these validation patterns.
Solution
Team members without regex expertise might struggle to understand and modify these validation patterns.
Pregex transforms regex into readable Python code using descriptive components.
Key benefits:

Code that explains its intent without comments
Easy modification without regex expertise
Composable patterns for complex validation
Export to regex format when needed

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

xlwings
[Python Utils]
– Python library that makes it easy to call Python from Excel and vice versa, with support for Excel on Windows, macOS, and web

juvio
[Python Utils]
– UV kernel for Jupyter with inline dependency management for notebooks

drawdb
[Data Engineer]
– Free, simple, and intuitive online database diagram editor and SQL generator

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Build Data Analysis with LangChain Pandas Agent

Problem
Do you find yourself writing the same pandas correlation, groupby, and filtering code repeatedly for data exploration?
Complex, multi-step analyses often involve tedious manual calculations and comparisons, pulling data scientists away from higher-value tasks like modeling and insight generation.
Solution
LangChain Pandas DataFrame Agent lets you analyze data using natural language, eliminating repetitive code and speeding up your workflow.
Key capabilities:

Ask complex analytical questions in plain English
Multi-step analysis in single requests
Get results with automatic explanations of methodology
Select from multiple AI models based on your query complexity

📖 View Full Article

🧪 Run code

⭐ View GitHub

Faster Type Checking with Ty’s Rust Engine

Problem
Traditional type checkers like mypy are slow on large codebases, making iteration cycles longer and development less efficient.
Solution
Ty is a Rust-based type checker that provides instant feedback on type errors.
When testing the FastAPI codebase, Ty completes type checking 9x faster than mypy.
Key benefits:

Significantly faster than mypy/pyright on large codebases
Auto-checks every save for immediate feedback while coding
Real-time IDE integration for VS Code and popular editors
Zero setup: run with uvx instantly, respects .gitignore automatically

⭐ View GitHub

☕️ Weekly Finds

hyperfine
[Python Utils]
– A command-line benchmarking tool for measuring the execution time of commands with statistical analysis across multiple runs

SurfSense
[LLM]
– Open Source Alternative to NotebookLM / Perplexity / Glean, connected to external sources such as search engines (Tavily, Linkup), Slack, Linear, Notion, YouTube, GitHub and more

stanza
[ML]
– Stanford NLP Python library for tokenization, sentence segmentation, part-of-speech tagging, named entity recognition, dependency parsing, and more

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Transform Document Images into Spreadsheets with LlamaParse

Problem
Converting document images such as receipts to structured spreadsheet data requires tedious typing and careful validation.
Solution
LlamaParse automates document data extraction by combining OCR parsing with schema validation, eliminating manual typing and human error.
Here is an example pipeline for extracting receipt data:

Parse receipt images to markdown using LlamaParse OCR engine
Define receipt structure with Pydantic models (company, date, items, totals)
Extract structured data automatically with OpenAI integration
Validate types and enforce business rules (positive prices, valid dates)
Export to pandas DataFrames or spreadsheets for analysis

📖 View Full Article

🧪 Run code

⭐ View GitHub

Solve Algebra Symbolically in Python with SymPy

Problem
Have you ever needed to expand or factor complex expressions but found yourself doing tedious algebra by hand?
Numeric libraries like NumPy can’t solve symbolic equations or manipulate algebraic expressions.
Solution
SymPy transforms Python into a powerful symbolic mathematics system.
Key capabilities:

Solve equations for any variable symbolically
Perform algebraic manipulations like expand, factor, and substitute
Generate LaTeX output for mathematical documentation
Integrate seamlessly with Jupyter notebooks and NumPy workflows

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

BERTopic
[ML]
– Leveraging BERT and c-TF-IDF to create dense clusters allowing for easily interpretable topics whilst keeping important words in the topic descriptions

mesop
[Python Utils]
– Rapidly build AI apps in Python – A Python-based UI framework that allows you to rapidly build web apps like demos and internal apps

crawlee-python
[Data Processing]
– A web scraping and browser automation library for Python to build reliable crawlers. Extract data for AI, LLMs, RAG, or GPTs

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

PySpark Transformations: Python API vs SQL Expressions

Problem
PySpark offers two ways to handle SQL transformations. How do you know which one to use?
Solution
Choose based on your development style and team expertise.
Use the DataFrame API if you’re comfortable with Python and need Python-native development with type safety and autocomplete support.
Use selectExpr() if you’re comfortable with SQL and need familiar SQL patterns and simplified CASE statements.
Both methods deliver the same performance, so pick the approach that fits your workflow.

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

dotenvx
[Python Utils]
– A secure dotenv with encryption, syncing, and zero-knowledge key sharing to make .env files secure and team-friendly

databases
[Data Processing]
– Async database support for Python with support for PostgreSQL, MySQL, and SQLite

pomegranate
[ML]
– Fast and flexible probabilistic modeling in Python implemented in PyTorch

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Build Faster Tests with pytest Session Fixtures

Problem
pytest fixtures provide reusable test data, but they reload for every test function by default.
When your fixture loads a large DataFrame, every test reloads the same data, wasting time and delaying your development workflow.
Solution
Session-scoped fixtures load data once at the start and reuse it across all test functions.
Apply this pattern to:

Load large datasets once instead of reloading for each test function
Share a database connection across all tests without passing it as a parameter
Automatically set random seeds for reproducible train/test splits

📖 Learn more

🧪 Run code

latexify: Turn Python Functions Into Clean Math Formulas

Problem
It is not ideal to present mathematical formulas written in Python code to executives and stakeholders as they are often not familiar with Python code.
However, writing LaTeX manually to show the formulas is time-consuming and tedious.
Solution
latexify transforms Python functions into clean mathematical notation with a single decorator. No manual LaTeX required.
Key features:

Automatic LaTeX generation from Python functions
Functions remain executable for calculations
Compatible with various notebooks such as Jupyter, Colab, and Marimo

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

ty
[Python Utils]
– An extremely fast Python type checker and language server, written in Rust

giotto-tda
[ML]
– A high-performance topological machine learning toolbox in Python built on top of scikit-learn

vibekit
[MLOps]
– Run Claude Code, Gemini, Codex — or any coding agent — in a clean, isolated sandbox with sensitive data redaction and observability baked in

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Create Dynamic Scatter Plots with Plotly Animation

Problem
Static scatter plots can’t show how data clusters change and evolve over time.
Solution
Plotly Express creates animated scatter plots that change over time in one line of code.
Key benefits:

Simply add the animation_frame=”time_column” parameter to px.scatter to create an animated scatter plot
Automatic smooth transitions between time periods
Built-in playback controls for user interaction
Works with any time-series dataset

📖 View Full Article

🧪 Run code

⭐ View GitHub

CloudQuery: Move RAG Data with 18-Line YAML (Sponsored)

Problem
RAG applications need data from various sources moved into vector stores. Manual API integration means writing boilerplate for rate limiting, pagination, and error handling instead of building AI.
Solution
CloudQuery handles the entire data-to-embeddings pipeline with declarative YAML config and native pgvector support.
Key benefits:

Pre-built connectors for AWS, GCP, Azure, and 100+ platforms
Sync state persistence with incremental processing and automatic schema evolution
Built-in PII removal, column obfuscation, and data cleaning for compliance
Native pgvector support: text splitting, embeddings, semantic indexing for RAG

📖 View Full Article

⭐ View GitHub

☕️ Weekly Finds

ShinkaEvolve
[ML]
– An open-source framework that evolves programs for scientific discovery with unprecedented sample-efficiency

claude-code-router
[LLM]
– A powerful tool to route Claude Code requests to different models and customize any request

data-formulator
[Data Viz]
– AI-driven tool designed to streamline the creation of data visualizations

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

LangGraph: Turn Any Python Function Into Agent Tools

Problem
AI agents need specialized tools to interact with the world beyond their training data like searching the web, querying databases, executing code, and integrating with APIs.
However, if there are too many tools, it becomes difficult to connect them to user requests intelligently.
Solution
LangGraph’s create_react_agent eliminates this entirely with LLM reasoning.
Key benefits of ReAct agents:

Handles fuzzy user requests by letting the LLM choose tools on the fly
Lets you drop in new @tool functions without touching control flow
Turns any Python function into an agent-accessible tool

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

MindsDB
[ML]
– AI data automation solution that connects and unifies petabyte scale enterprise data, enabling informed decision-making in real-time

gspread
[Python Utils]
– Google Sheets Python API for managing Google Spreadsheets programmatically

wrapt
[Python Utils]
– Python module for decorators, wrappers and monkey patching with transparent object proxy

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Query Nested JSON with DuckDB SQL Dot Notation

Problem
Working with nested JSON structures requires complex normalization steps in pandas before analysis.
Solution
DuckDB automatically flattens nested JSON files and allows direct querying of nested fields with dot notation.
Other key benefits:

High-performance columnar engine for analytical workloads
Zero external dependencies – embedded database design
Native support for Parquet, CSV, JSON without data movement
Direct integration with pandas, NumPy, and Arrow format

📖 View Full Article

🧪 Run code

⭐ View GitHub

Gradio: Turn Python Functions into Interactive AI Demos

Problem
You built an AI model that works well for your use case in your notebook. But how do you demo it to stakeholders?
Your stakeholders expect clickable demos, not code snippets, but building web interfaces requires frontend expertise you don’t have.
Solution
With Gradio, you can create professional chat interfaces with just 10 lines of code.
Key benefits:

Instant UI generation from Python functions
Zero frontend coding required
Share live demos with URL links without any deployment

📖 View Full Article

🧪 Run code

⭐ View GitHub

☕️ Weekly Finds

presidio
[Data Processing]
– Context aware, pluggable and customizable PII de-identification service for text and images

testcontainers-python
[Python Utils]
– Python library providing a friendly API to run Docker containers for functional and integration testing

shapash
[ML]
– Python library dedicated to the interpretability of Data Science models with explicit visualization labels

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

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📅 Today’s Picks

Query GitHub Issues with Natural Language Using LangChain

Problem
Have you ever spent hours clicking through GitHub pages to understand project status, track bugs, or review recent changes? Manual repository analysis wastes development time that could be spent building features.
Solution
LangChain’s GitHubIssuesLoader converts repository issues and PRs into searchable content that responds to natural language questions about bugs, features, and project status.
This method integrates seamlessly with LangChain workflows.

📖 View Full Article

🧪 Run code

⭐ View GitHub

Mock External APIs for Fast, Reliable Tests

Problem
Testing with real APIs and databases is slow, expensive, and unreliable.
External dependencies create flaky tests that can fail due to network issues, rate limits, or service downtime rather than code problems.
Solution
The patch decorator replaces external calls with controllable mock objects for isolated testing.
Key benefits:

Reproducible results across different machines
Fast, reliable tests that focus on your logic
Test edge cases and error conditions that are hard to trigger naturally

Test your data processing logic without waiting for external services or consuming API quotas.

📖 View Full Article

🧪 Run code

☕️ Weekly Finds

timesketch
[Python Utils]
– Collaborative forensic timeline analysis tool for organizing and analyzing forensic timelines

ExtractThinker
[LLM]
– AI-powered Document Intelligence library for LLMs, offering ORM-style interaction for flexible document workflows

ecco
[ML]
– Explain, analyze, and visualize NLP language models with interactive visualizations in Jupyter notebooks

Looking for a specific tool? Explore 70+ Python tools →

Stay Current with CodeCut

Actionable Python tips, curated for busy data pros. Skim in under 2 minutes, three times a week.

.codecut-subscribe-form .codecut-input {
background: #2F2D2E !important;
border: 1px solid #72BEFA !important;
color: #FFFFFF !important;
}
.codecut-subscribe-form .codecut-input::placeholder {
color: #999999 !important;
}
.codecut-subscribe-form .codecut-subscribe-btn {
background: #72BEFA !important;
color: #2F2D2E !important;
}
.codecut-subscribe-form .codecut-subscribe-btn:hover {
background: #5aa8e8 !important;
}

.codecut-subscribe-form {
max-width: 650px;
display: flex;
flex-direction: column;
gap: 8px;
}
.codecut-input {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: #FFFFFF;
border-radius: 8px !important;
padding: 8px 12px;
font-family: ‘Comfortaa’, sans-serif !important;
font-size: 14px !important;
color: #333333;
border: none !important;
outline: none;
width: 100%;
box-sizing: border-box;
}
input[type=”email”].codecut-input {
border-radius: 8px !important;
}
.codecut-input::placeholder {
color: #666666;
}
.codecut-email-row {
display: flex;
align-items: stretch;
height: 36px;
gap: 8px;
}
.codecut-email-row .codecut-input {
flex: 1;
}
.codecut-subscribe-btn {
background: #72BEFA;
color: #2F2D2E;
border: none;
border-radius: 8px;
padding: 8px 14px;
font-family: ‘Comfortaa’, sans-serif;
font-size: 14px;
font-weight: 500;
cursor: pointer;
text-decoration: none;
display: flex;
align-items: center;
justify-content: center;
transition: background 0.3s ease;
}
.codecut-subscribe-btn:hover {
background: #5aa8e8;
}
.codecut-subscribe-btn:disabled {
background: #999;
cursor: not-allowed;
}
.codecut-message {
font-family: ‘Comfortaa’, sans-serif;
font-size: 12px;
padding: 8px;
border-radius: 6px;
display: none;
}
.codecut-message.success {
background: #d4edda;
color: #155724;
display: block;
}
@media (max-width: 480px) {
.codecut-email-row {
flex-direction: column;
height: auto;
gap: 8px;
}
.codecut-input {
border-radius: 8px;
height: 36px;
}
.codecut-subscribe-btn {
width: 100%;
text-align: center;
border-radius: 8px;
height: 36px;
}
}

Subscribe