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Dir : ~/opt/gsutil/third_party/pyparsing/examples/

View File Name : tag_metadata.py

#
# tag_metadata.py
#
# Copyright 2024, Paul McGuire
#

import pyparsing as pp
ppu = pp.unicode

# associate "alphabet" tag with different Unicode character sets
latin = pp.Word(ppu.Latin1.alphas) + pp.Tag("alphabet", "Latin")
greek = pp.Word(ppu.Greek.alphas) + pp.Tag("alphabet", "Greek")
japanese = pp.Word(ppu.Japanese.alphas) + pp.Tag("alphabet", "Japanese")

# associate "mood" tags with different end punctuation marks
end_punc = (
        ("." + pp.Tag("mood", "normal"))
        | ("!" + pp.Tag("mood", "excited"))
        | ("?" + pp.Tag("mood", "curious"))
)

greeting = "Hello," + (latin | greek | japanese) + end_punc

if __name__ == '__main__':
    import contextlib

    with contextlib.suppress(Exception):
        greeting.create_diagram(
            "tag_metadata_diagram.html",
            vertical=3,
            show_hidden=True
        )

    greeting.run_tests(
        """\
        Hello, World.
        Hello, World!
        Hello, κόσμος?
        Hello, 世界!
        """
    )