Biopython is a collection of open-source tools and libraries for computational biology and bioinformatics. It provides functionality for working with biological data, including sequence analysis, file parsing, and database querying. Biopython supports multiple bioinformatics formats, such as FASTA, GenBank, and others. It also includes tools for alignment, 3D structure analysis, and phylogenetic tree construction. Biopython is widely used by researchers and developers to streamline data analysis and solve complex problems in biological research.