需要反转文件，但最后一行没有回车，因此反转列表的第一项中有2行。

303620.43,6187793.62
303663.61,6187757.08
303652.22,6187702.51
303580.10,6187685.43
303551.63,6187737.15
303574.88,6187775.11
303610.94,6187773.69

303610.94,6187773.69303574.88,6187775.11
303551.63,6187737.15
303580.10,6187685.43
303652.22,6187702.51
303663.61,6187757.08
303620.43,6187793.62

\'\\n\'

rstrip

print

a = [ln.rstrip() for ln in open(\'datafile.txt\')]
a.reverse()
for ln in a:
    print(ln)

\'\\n\'

endswith

myFile = open(filePath, \'r\')
lines = myFile.read().splitlines() #by default splitlines removes trailing \'\\n\'
myFile.close()
lines.reverse()
for line in lines:
    print line