gps_nmea.py

import serial
import pynmea2

serialPort = serial.Serial("/dev/ttyUSB0", 9600, timeout=0.5)
def parseGPS(str):
    if str.find("GPGGA") > 0:
        msg = pynmea2.parse(str)
        print (msg)
        print ("Timestamp: %s -- Lat: %s %s -- Lon: %s %s -- Altitude: %s %s" % (msg.timestamp,msg.lat,msg.lat_dir,msg.lon,msg.lon_dir,msg.altitude,msg.altitude_units))



while True:
    str = serialPort.readline()
    str2 = str.decode("utf-8")
    parseGPS(str2)