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.. py:module:: PIL.TiffTags
.. py:currentmodule:: PIL.TiffTags
:py:mod:`~PIL.TiffTags` module
==============================
The :py:mod:`~PIL.TiffTags` module exposes many of the standard TIFF
metadata tag numbers, names, and type information.
.. method:: lookup(tag)
:param tag: Integer tag number
:param group: Which :py:data:`~PIL.TiffTags.TAGS_V2_GROUPS` to look in
.. versionadded:: 8.3.0
:returns: Taginfo namedtuple, From the :py:data:`~PIL.TiffTags.TAGS_V2` info if possible,
otherwise just populating the value and name from :py:data:`~PIL.TiffTags.TAGS`.
If the tag is not recognized, "unknown" is returned for the name
.. versionadded:: 3.1.0
.. class:: TagInfo
.. method:: __init__(self, value=None, name="unknown", type=None, length=0, enum=None)
:param value: Integer Tag Number
:param name: Tag Name
:param type: Integer type from :py:data:`PIL.TiffTags.TYPES`
:param length: Array length: 0 == variable, 1 == single value, n = fixed
:param enum: Dict of name:integer value options for an enumeration
.. method:: cvt_enum(self, value)
:param value: The enumerated value name
:returns: The integer corresponding to the name.
.. versionadded:: 3.0.0
.. py:data:: PIL.TiffTags.TAGS_V2
:type: dict
The ``TAGS_V2`` dictionary maps 16-bit integer tag numbers to
:py:class:`PIL.TiffTags.TagInfo` tuples for metadata fields defined in the TIFF
spec.
.. versionadded:: 3.0.0
.. py:data:: PIL.TiffTags.TAGS_V2_GROUPS
:type: dict
:py:data:`~PIL.TiffTags.TAGS_V2` is one dimensional and
doesn't account for the fact that tags actually exist in
`different groups <https://exiftool.org/TagNames/EXIF.html>`_.
This dictionary is used when the tag in question is part of a group.
.. versionadded:: 8.3.0
.. py:data:: PIL.TiffTags.TAGS
:type: dict
The ``TAGS`` dictionary maps 16-bit integer TIFF tag number to
descriptive string names. For instance:
>>> from PIL.TiffTags import TAGS
>>> TAGS[0x010e]
'ImageDescription'
This dictionary contains a superset of the tags in :py:data:`~PIL.TiffTags.TAGS_V2`, common
EXIF tags, and other well known metadata tags.
.. py:data:: PIL.TiffTags.TYPES
:type: dict
The ``TYPES`` dictionary maps the TIFF type short integer to a
human readable type name.
.. py:data:: PIL.TiffTags.LIBTIFF_CORE
:type: list
A list of supported tag IDs when writing using LibTIFF.
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