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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 copy_file_if_update_required(source_file, target_file):
 """Copies source_file to target_file if latter one in not existing or outdated :param source_file: Source file of the copy operation :param target_file: Target file of the copy operation """

    if file_needs_update(target_file, source_file):
        shutil.copy(source_file, target_file)