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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_package_data():
 """ Return package data For example: {'': ['*.txt', '*.rst'], 'hello': ['*.msg']} means: - If any package contains *.txt or *.rst files, include them - And include any *.msg files found in the 'hello' package, too: """

    baseline_images = [
        'tests/baseline_images/%s/*' % x
        for x in os.listdir('plotnine/tests/baseline_images')]
    csv_data = ['data/*.csv']
    package_data = {'plotnine': baseline_images + csv_data}
    return package_data