def read_month_data( month , year , commodity ):
rtn = MonthData( month , year )
dir = "price_data/" + str( year ) + " " + DateUtils.format_month( month )
try :
file = open( dir + "/" + commodity + ".csv" , "r" )
lines = file.readlines()
for line in lines :
datapoint = DataPoint.from_csv_month_data( year , month , line )
rtn.set( int( datapoint.get_day() ) , datapoint )
except IOError:
#there is no data, so ignore the error and return default
#values of 0 for daily and average prices
pass
return rtn
