title: python FTP download file with certain name
body: <p>I have this FTP with folder and it contains these files:</p>
  
  <pre><code>pw201602042000.nc,
   pw201602042010.nc,
   pw201602042020.nc, 
   pw201602042030.nc, 
   pw201602042040.nc,
   pw201602042050.nc,
   pw201602042100.nc,
   pw201602042110.nc, 
   pw201602042120.nc, 
   pw201602042130.nc, 
   pw201602042140.nc,
   pw201602042150.nc, 
   pw201602042200.nc
  </code></pre>
  
  <p>how to download only file ending with 00?</p>
  
  <pre><code>from ftplib import FTP
  
  server = FTP("ip/serveradress")
  server.login("user", "password")
  
  server.retrlines("LIST") 
  server.cwd("Folder")
  
  server.sendcmd("TYPE i") # ready for file transfer
  server.retrbinary("RETR %s"%("pw201602042300.nc"), open("pw", "wb").write) 
  </code></pre>