with open(filename,"r") as f:
reader = csv.reader(f,delimiter = ",")
data = list(reader)
rownum = len(data)
with open(filename2,"r") as f:
reader2 = csv.reader2(f,delimiter = ",")
data2 = list(reader2)
rownum2 = len(data)
if rownum > rownum2:
delete(rownum until rownum = rownum2 at end)
这很简单
您需要保存新数据吗?如果是这样,这将完成工作,文件甚至不能是csv格式:
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