# uproot.dask_write

Defined in uproot.writing._dask_write on line 45.

uproot.writing._dask_write.dask_write(array, destination, compute=True, storage_options=None, prefix: str | None = None, tree_name='tree', title='', field_name=<function <lambda>>, initial_basket_capacity=10, counter_name=<function <lambda>>, resize_factor=10.0, compression='zlib', compression_level=1)
  Parameters:

    - array (dask_awkward.Array) – The `dask_awkward.Array` collection to write to disk.

    - destination (path-like) – Where to store the output; this can be a local filesystem path or a remote filesystem path.

    - compute (bool) – If `True`, immediately compute the result (write data to disk). If `False` a Scalar collection will be returned such that `compute` can be explicitly called.

    - prefix (str) – An addition prefix for output files. If `None` all parts inside the destination directory will be named `?`; if defined, the names will be `f"{prefix}-partN.root"`.

    - tree_name (str) – Name of ttree to be written to. Default is “tree”.

    - title (str) – Title of ttree to be written to. Default is “”.

    - field_name (callable of str → str) – Function to generate TBranch names for columns of an Awkward record array or a Pandas DataFrame.

    - initial_basket_capacity (int) – Number of TBaskets that can be written to the TTree without rewriting the TTree metadata to make room.

    - resize_factor (float) – When the TTree metadata needs to be rewritten, this specifies how many more TBasket slots to allocate as a multiplicative factor.

    - compression (uproot.compression.Compression or None) – Compression algorithm and level for new objects added to the file. Can be updated after creating the uproot.WritableFile. Default is `uproot.ZLIB(1)`.

  Writes a dask-awkward array to a set of ROOT files. Data is written to a TTree