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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_version(filepath='src/birding/version.py'):
 """Get version without import, which avoids dependency issues."""

    with open(get_abspath(filepath)) as version_file:
        return re.search(
            r"""__version__\s+=\s+(['"])(?P<version>.+?)\1""",
            version_file.read()).group('version')