File Content Extraction 25.3
Filter SDK Python Programming Guide

# Metadata Examples

If you want to process both standardized and non-standardized metadata elements, you can iterate over metadata elements without checking an element's standard key – both standardized and non-standardized metadata can be handled in the same way. However, standardization provides a way to handle common types of metadata - using the same code for all file formats. Below is an illustrative example.

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    # Open a document
    with session.open(file_path) as doc:

        # Iterate over metadata fields
        for element in doc.metadata:

            # Skip non-standard fields
            if element.standard_key == kv.MetadataKey.Other:
                continue

            # Do something with the standardized WordCount field
            if element.standard_key == kv.MetadataKey.WordCount:
                print(f"The word count is {element.value}")

The following example demonstrates how to take advantage of field standardization, but also avoid processing a metadata field more than once.

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    # Open a document
    with session.open(file_path) as doc:

        # Iterate over metadata fields
        for element in doc.metadata:

            # Process standardized elements where possible but also process
            # non-standard elements that have no standardized alternative.
            # Ignore duplicate elements output for backwards compatibility.

            if not element.has_standard_alternative and not element.is_superseded:
                process(element)

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Product: File Content Extraction 25.3

Topic Title: Metadata Examples