FTP client using raw socket displaying list of files and directories.

ftp-client-list.py

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('localhost', 21))
welcome_msg = s.recv(1024).strip()
# print welcome_msg

commands = ['USER 5112100155\r\n', 'PASS 123\r\n', 'TYPE I\r\n', 'EPSV\r\n', 'QUIT\r\n']
i = 1
while True:
    try:
        if i > len(commands):            
            msg = str(s.recv(1024))        
            print msg.strip()
            s.close()
            break
        
        s.send(commands[i-1])        
        msg = str(s.recv(1024))
        if "226" in msg:
	    print msg.strip()
        if "Entering Extended Passive Mode" in msg:
            data_port = int(msg.strip().split('|||')[1][:-3])
            data_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)                       
            data_sock.connect(('localhost', data_port))

            s.send('LIST\r\n')
            data = data_sock.recv(4096)            
            msg = str(s.recv(1024)).strip()
            # print msg.strip()
                    
        i += 1
                
    except socket.error, exc:
        print exc
        s.close()
        break