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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 move_vcf(orig_file, new_file):
 """Move a VCF file with associated index. """

    for ext in ["", ".idx", ".tbi"]:
        to_move = orig_file + ext
        if os.path.exists(to_move):
            shutil.move(to_move, new_file + ext)