How to send 3 voltage measurement data from Raspberry Pi to Win PC notebook for
processing, graphing, etc. 
Pyton2 socket connection program part from server:
import sys
import socket
# ............socket.................................................
HOST = ''   # Symbolic name meaning all available interfaces
PORT = 7227 # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'
try:
  s.bind((HOST, PORT))
except socket.error , msg:
  print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
  sys.exit()
print 'Socket bind complete'
s.listen(10)
print 'Socket now listening'
# ............connection..............................................
#wait to accept a connection - blocking call
conn, addr = s.accept()
print 'Connected with ' + addr[0] + ':' + str(addr[1])
# ....................................................................

Repetitive sending of 3 values concatenated into 1 string s012:

while tmin < tgiv:           # maximum minutes of running
  (v0,v1,v2) = bj.dm_pet(di,t1) # CALL: measuring and printing one line
  sv0, sv1, sv2 = str(v0), str(v1), str(v2)
  s012 = sv0 + ":" + sv1 + ":" + sv2 + "x"
  try :
    conn.sendall(s012)   # .......send data to client..........
  except socket.error:          # ...
    print 'Send failed'         # ...
    sys.exit()
      .
      .
      .
Displayed:

Socket created
Socket bind complete
Socket now listening
Connected with 192.168.1.15:50585

Pyton2 socket connection program part from client:
import socket   #for sockets
import sys      #for exit

#create an INET, STREAMing socket
try:
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
except socket.error:
  print 'Failed to create socket'
  sys.exit()
print 'Socket Created'
 
host = '192.168.1.17';
port = 7227;
#Connect to remote server
s.connect((host,port))
print 'Socket Connected to ' + host + ' on port ' + str(port)
# .............................................................

Receiving string sv012 and extracting 3 values v0, v1, v2:

while True:
  sv012 = s.recv(16)
  tm = tm + 1
  if len(sv012) == 0: break
  if len(sv012) != 15: continue
  sv0, sv1, sv2 = sv012[0:4], sv012[5:9], sv012[10:14]
  v0, v1, v2 = int(sv0), int(sv1), int(sv2)
      .
      .
      .
Displayed:

Socket Created
Socket Connected to 192.168.1.17 on port 7227