CodeSquire is a code writing assistant for data scientists, engineers, and analysts. It helps users write code quickly by providing autocomplete suggestions and translating comments into code, as well as suggesting well-known libraries and helping to explain code. It also helps users create complex functions that involve multiple logic steps, and provides explanations for code. CodeSquire works in places like Google Colab, BigQuery, and JupyterLab and can be downloaded as a Chrome Extension.