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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 validate_contents(file_contents):
 """Ensures that all ipynb files in FILE_CONTENTS are valid JSON files."""

    for name, contents in file_contents.items():
        if os.path.splitext(name)[1] != '.ipynb':
            continue
        if not contents:
            return False
        try:
            json_object = json.loads(contents)
        except ValueError:
            return False
    return True