The GermaParlPy Python package provides functionality to deserialize, serialize, manage, and query the GermaParlTEI corpus by Blätte & Leonhardt (2024) and derived corpora. The GermaParlTEI corpus comprises the plenary protocols of the German Bundestag (parliament), encoded in XML according to the TEI standard. The current version covers the first 19 legislative periods, encompassing transcribed speeches from the Bundestag's constituent session on 7 September 1949 to the final sitting of the Angela Merkel era in 2021. This makes it a valuable resource for research in various scientific disciplines. For detailed information on the library, visit the official website. The underlying data set, the GermaParl corpus, was compiled and released by Blätte & Leonhardt (2024).See also their R-Library PolMineR by Blätte (2020) in the context of the PolMine-Project, which served as an inspiration for this library.