<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def set_ncbi_email():
 """Set contact email for NCBI."""

    Entrez.email = args.email
    logger.info("Set NCBI contact email to %s", args.email)
    Entrez.tool = "genbank_get_genomes_by_taxon.py"