---
name: "ptrepack"
section: "1"
platform: "linux"
package: "python3-tables"
version: "3.10.2-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ptrepack"
---

# ptrepack(1)

Copy any PyTables Leaf, Group or complete subtree into another file.

## NAME

ptrepack - Copy any PyTables Leaf, Group or complete subtree into another file.

## SYNOPSIS

**ptrepack** -h -v -o -R *start,stop,step* --non-recursive --dest-title=title --dont-copyuser-attrs --overwrite-nodes --complevel=(0-9) --complib=lib --shuffle=(0\|1) --fletcher32=(0\|1) --keep-source-filters --upgrade-flavors --dont-regenerate-old-indexes sourcefile:sourcegroup destfile:destgroup\

## DESCRIPTION

Copy any Leaf, Group or complete subtree from a PyTables file into another file.

## OPTIONS

A summary of options is included below.

- **-h**

  Prints a help text.

- **-v**

  Show more information.

- **-o**

  Overwrite destination file.

- **-R RANGE**

  Select a RANGE of rows in the form *start,stop,step* during the copy of *all* the leaves.

- **--non-recursive**

  Do not do a recursive copy. Default is to do it.

- **--dest-title=title**

  Title for the new file (if not specified, the source is copied).

- **--dont-copy-userattrs**

  Do not copy the user attrs (default is to do it).

- **--overwrite-nodes**

  Overwrite destination nodes if they exist. Default is not to overwrite them.

- **--complevel=(0-9)**

  Set a compression level (0 for no compression, which is the default).

- **--complib=lib**

  Set the compression library to be used during the copy. *lib* can be set to "zlib", "lzo", "ucl" or "bzip2". Defaults to "zlib".

- **--shuffle=(0\|1)**

  Activate or not the shuffling filter (default is active if complevel\>0).

- **--fletcher32=(0\|1)**

  Whether to activate or not the fletcher32 filter (not active by default).

- **--keep-source-filters**

  Use the original filters in source files. The default is not doing that if any of --complevel, --complib, --shuffle or --fletcher32 option is specified.

- **--upgrade-flavors**

  When repacking PyTables 1.x files, the flavor of leaves will be unset. With this, such a leaves will be serialized as objects with the internal flavor ("numpy" for 2.x series).

- **--dont-regenerate-old-indexes**

  Disable regenerating old indexes. The default is to regenerate old indexes as they are found.

## SEE ALSO

[**ptdump**(1)](/ptdump/1.md).\
 These utilities are documented fully by *PyTables user's manual*.

## AUTHOR

This manual page was written by Francesc Altet \<faltet@carabos.com\>.