Defectors: A Large Scale Python Dataset for Defect Prediction

Defect prediction has been a major research problem in the software engineering domain for the last five decades.
In recent years, large deep-learning models have shifted the performance of software engineering tasks to new limits and are gaining usage in defect prediction.
However, these defect prediction models are often limited by the quality of their datasets, which are not large or diverse enough.
In this paper, we present Defectors, a large dataset for both line-level and just-in-time defect prediction.
Defectors consist of $\approx$ 213K source code files ($\approx$ 93K defective and $\approx$ 120K defect-free files) from 25 popular python projects from various domains and organizations.
These projects come from a diverse set of domains including machine learning, automation, and internet-of-things.
Such a scale and diversity make Defectors a suitable dataset for deep learning models, especially transformer models that require large and diverse datasets to effectively generalize defect-inducing patterns to predict future defects.