TiffTags Module

The TiffTags module exposes many of the stantard TIFFmetadata tag numbers, names, and type information.

• PIL.TiffTags.lookup(tag)[源代码]

参数:tag – Integer tag number返回:Taginfo namedtuple, From the TAGS_V2 info if possible,otherwise just populating the value and name from TAGS.If the tag is not recognized, “unknown” is returned for the name

3.1.0 新版功能.

• class PIL.TiffTags.TagInfo[源代码]
• • init(self, value=None, name="unknown", type=None, length=0, enum=None)

参数:

- **value** – Integer Tag Number
- **name** – Tag Name
- **type** – Integer type from [<code>PIL.TiffTags.TYPES</code>](#PIL.TiffTags.PIL.TiffTags.TYPES)
- **length** – Array length: 0 == variable, 1 == single value, n = fixed
- **enum** – Dict of name:integer value options for an enumeration

• cvtenum(_self, value)[源代码]

参数:value – The enumerated value name返回:The integer corresponding to the name.

3.0.0 新版功能.

• PIL.TiffTags.TAGS_V2
• The TAGS_V2 dictionary maps 16-bit integer tag numbers toPIL.TagTypes.TagInfo tuples for metadata fields defined in the TIFFspec.

3.0.0 新版功能.

• PIL.TiffTags.TAGS
• The TAGS dictionary maps 16-bit integer TIFF tag number todescriptive string names. For instance:

>>> from PIL.TiffTags import TAGS
>>> TAGS[0x010e]
'ImageDescription'

This dictionary contains a superset of the tags in TAGS_V2, commonEXIF tags, and other well known metadata tags.

• PIL.TiffTags.TYPES
• The TYPES dictionary maps the TIFF type short integer to ahuman readable type name.