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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 getSequence(title, db='nucleotide'):
 """ Get information about a sequence from Genbank. @param title: A C{str} sequence title from a BLAST hit. Of the form @param db: The C{str} name of the Entrez database to consult. NOTE: this uses the network! Also, there is a 3 requests/second limit imposed by NCBI on these requests so be careful or your IP will be banned. """

    titleId = title.split(' ', 1)[0]
    try:
        gi = titleId.split('|')[1]
    except IndexError:
        # Assume we have a gi number directly, and make sure it's a string.
        gi = str(titleId)

    try:
        client = Entrez.efetch(db=db, rettype='gb', retmode='text', id=gi)
    except URLError:
        return None
    else:
        record = SeqIO.read(client, 'gb')
        client.close()
        return record