uproot.update
Defined in uproot.writing.writable on line 138.
- uproot.writing.writable.update(file_path: str | Path | IO, **options)
- Parameters:
- file_path (str, - pathlib.Pathor file-like object) – The filesystem path of the file to open or an open file.
- options – See below. 
 
 - Opens a local file for writing. Like ROOT’s - "UPDATE"option, this function expects a file to already exist at- file_pathand opens it so that new data can be added to it or individual objects may be deleted from it.- Returns a uproot.WritableDirectory. - Options (type; default): - initial_directory_bytes (int; 256) 
- uuid_function (callable; - uuid.uuid1)
 - See uproot.WritableFile for details on these options. - Additional options are passed to as - storage_optionsto the fsspec filesystem