CodeSearchNet

The CodeSearchNet Corpus is a large dataset of functions with associated documentation written in Go, Java, JavaScript, PHP, Python, and Ruby from open source projects on GitHub. The CodeSearchNet Corpus includes:

• Six million methods overall
• Two million of which have associated documentation (docstrings, JavaDoc, and more)
• Metadata that indicates the original location (repository or line number, for example) where the data was found

Source: https://github.blog/2019-09-26-introducing-the-codesearchnet-challenge/