Python script sending files as they come into the directory and email

Trying to create a piece of python code that monitors a directory for new randomly named csv files. For some reason I cannot find a way to use the unix trick of *.cvs to work. and then i need to have to particular file to be emailed and moved to a different directory. this is my code so far

#!/usr/bin/env python

import os
import base64
import smtplib
import mimetypes
import email
import email.mime.application
import shutil
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.MIMEBase import MIMEBase
from email import encoders

#locate file and send it to the email
for file in os.listdir("/root/tmp/"):
   if file.endswith(".csv"):
     fromaddr = "FROM EMAIL"
     toaddr = "TO EMAIL"

     msg = MIMEMultipart()

     msg['From'] = fromaddr
     msg['To'] = toaddr
     msg['Subject'] = "CSV"

     body = "CSV SENT SUCCESSFULLY"

     msg.attach(MIMEText(body, 'plain'))

     filename = "prod.csv" # <-- trying to keep the file name from below as it finds it
     attachment = open("/root/tmp/prod.csv", "rb") # <--- need to send cvs as they come in

     part = MIMEBase('application', 'octet-stream')
     part.set_payload((attachment).read())
     encoders.encode_base64(part)
     part.add_header('Content-Disposition', "attachment; filename= %s" % filename)

     msg.attach(part)

     server = smtplib.SMTP('SMTP ADDRESS', 587)
     server.starttls()
     server.login(fromaddr, "PASSWORD")
     text = msg.as_string()
     server.sendmail(fromaddr, toaddr, text)
     server.quit()    

#move to a different folder once sent

     path = "/root/tmp/" # <--- using root for testing :)
     moveto = "/root/sent/" # <-- destination folder 
     files = os.listdir(path)
     files.sort()
     for f in files:
      src = path+f
      dst = moveto+f
      shutil.move(src,dst)