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---
license: mit
task_categories:
- text-generation
language:
- en
tags:
- Python
- code
size_categories:
- 1M<n<10M
---


**Python-Code-Large**

Python-Code-Large is a large-scale corpus of Python source code comprising more than **2 million** rows of Python code. The dataset is designed to support research in large language model (LLM) pretraining, code intelligence, software engineering automation, and program analysis for the Python ecosystem.

By providing a high-volume, language-specific corpus, Python-Code-Large enables systematic experimentation in Python-focused model training, domain adaptation, and downstream code understanding tasks.

Python-Code-Large addresses the need for a dedicated Python-only dataset at substantial scale, enabling focused research across data science, backend systems, automation, scientific computing, and AI-driven Python environments.


**1. Dataset Composition**

Programming Language: Python

Size: 2M+ rows of Python code

File Format: .jsonl

Each record is stored as structured JSON Lines format for efficient streaming, large-scale training, and distributed processing.


Content Types

The dataset includes a wide variety of Python constructs and paradigms, such as:

- Function definitions and decorators

- Class-based and object-oriented programming

- Inheritance and multiple inheritance patterns

- Async programming (async / await)

- Generators and iterators

- Context managers

- Exception handling patterns

- Type hints and annotations

- Functional programming constructs (map, filter, lambda)

- List, dictionary, and set comprehensions

- Metaprogramming patterns

- Data processing pipelines

- Web framework logic

- REST API implementations

- Machine learning scripts

- Data science notebooks (converted to .py where applicable)

- CLI utilities

- Testing frameworks (unit tests, integration tests)

- Configuration and environment management code

- Docstrings and inline documentation

- Modern Python 3.x features



**2. Intended Research Applications**

2.1 Pretraining

- Training Python code foundation models from scratch

- Continued pretraining of existing LLMs

- Python-specialized language modeling

- Tokenizer training optimized for Python syntax

- AST-aware pretraining experiments


2.2 Fine-Tuning and Adaptation

- Code completion systems

- Intelligent IDE assistants

- Automated refactoring tools

- Conversational programming agents

- Python-specific copilots

- Docstring generation systems

- Type inference assistants

  

2.3 Code Intelligence Tasks

- Code summarization

- Code-to-text generation

- Documentation generation

- Bug detection

- Vulnerability detection

- Clone detection

- Code similarity modeling

- Readability enhancement

_ Static code analysis

- Structural and dependency modeling




2.4 Software Engineering Research

- Empirical studies of Python coding patterns

- Analysis of async architectures in Python

- Framework usage studies

- Dependency and import graph modeling

- AST-based experiments

- Cross-version Python evolution analysis

- Type adoption analysis (PEP-based transitions)

- Large-scale study of testing patterns


**3. Research Opportunities Enabled**

Python-Code-Large enables exploration of:

- Python-specific tokenizer efficiency

- Function-level representation learning

- Retrieval-augmented generation for code

- Secure code modeling

- Long-context modeling of large Python files

- Docstring-conditioned generation

- Python-specific benchmark creation



Thanks to open source community for all the guidance & support!!