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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/formats.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/formats.rst b/docs/formats.rst index 0c46733..2357efe 100644 --- a/docs/formats.rst +++ b/docs/formats.rst @@ -206,6 +206,15 @@ Import/export data in Excel 07+ Spreadsheet representation. This format is optional, install Tablib with ``pip install "tablib[xlsx]"`` to make the format available. +The ``import_set()`` and ``import_book()`` methods accept keyword +argument ``read_only``. If its value is ``True`` (the default), the +XLSX data source is read lazily. Lazy reading generally reduces time +and memory consumption, especially for large spreadsheets. However, +it relies on the XLSX data source declaring correct dimensions. Some +programs generate XLSX files with incorrect dimensions. Such files +may need to be loaded with this optimization turned off by passing +``read_only=False``. + .. note:: When reading an ``xlsx`` file containing formulas in its cells, Tablib will |