ROS, working till utm values

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""

import rospy
import serial

### Start Rospy and get all the parameters.
rospy.init_node('serial_connection', anonymous = True)
serial_port = rospy.get_param('~port','/dev/ttyUSB0')
serial_baud = rospy.get_param('~baudrate',4800)

### Read the serial ports with above parameters
port = serial.Serial(serial_port, serial_baud, timeout=3)


lat = []
lon = []
alt = []

c = 0

while c < 10:
    data = str(port.readline())

    if(data.startswith('$GPGGA')): # $GPGGA
        print(data)

        ## Seperating with commas
        datalist = data.split(',')

        ### Saving Lattitude, longitude and Altitude in each reading in seperate lists.
        lat.append(datalist[2])
        lon.append(datalist[4])
        alt.append(datalist[9])

    c = c + 1

print(lat)
print(lon)
print(alt)


# Convert lat, lon to utm using python utm package
import utm

utm_val = []

for i in range(0, len(lat)):

    utm_values = utm.from_latlon(lat[i], lon[i])
    utm_val.append(utm_values)


print(utm_val)