- uproot.writing.writable.update(file_path, **options)
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)
See uproot.WritableFile for details on these options.