temp_file = open('mean_temp.txt','a+')
temp_file.write("Rio de Janeiro,Brazil,30.0,18.0\n")
temp_file.seek(0,0)
headings = temp_file.readline()
headings = headings.split(',')
city_temp = temp_file.readline()
while city_temp:
    city_temp = city_temp.split(',')
    print(headings[0].capitalize(),"of",city_temp[0],headings[2],"is",city_temp[2],"Celsius.")
    city_temp = temp_file.readline()
temp_file.close()