本文实例为大家分享了python脚本筛选出两个文件中重复的行数，供大家参考，具体内容如下

'''查找A文件中，与B文件中内容不重复的内容'''#!usr/bin/pythonimport sysimport os'''字符串查找函数，使用二分查找法在列表中进行查询'''def binarySearch(value, lines): right = len(lines) - 1 left = 0 a = value.strip() while left <= right: middle = int((right + left + 1)/2) b = lines[middle].strip() if a == b: return 1 if a < b: right = middle - 1 else: left = middle + 1 return 0DPT = 100000 # DPT 是Data Per File的意思fileAName = sys.argv[1];fileBName = sys.argv[2];#STEP1：先拆掉B文件，作为比较基准，临时文件命名为temp1,temp2,...,tempNprint("拆分比对文件...\n")fB = open(fileBName)tempFileNo = 1tempFileName = "temp{0}".format(tempFileNo)fTemp = open(tempFileName, "w+")line = fB.readline()lineCount = 0while line: if lineCount >= DPT: fTemp.flush() fTemp.close() tempFileNo = tempFileNo + 1 tempFileName = "temp{0}".format(tempFileNo) fTemp = open(tempFileName, "w+") lineCount = 0 fTemp.write(line) lineCount = lineCount + 1 line = fB.readline() fTemp.flush()fTemp.close()fB.close()print("拆分完成，一共{0}个临时文件，{1}条数据。\n".format(tempFileNo, (tempFileNo-1)*DPT + lineCount))#STEP2：把A文件与B文件拆出来的临时文件逐个进行比较，将结果轮流写入文件result0, result1# 最后写入的result文件就是最终结果fA = open(fileAName)resultTempFile = {"result0", "result1"};tempIndex = 0fOut = open("repeat", "w+")repeatCount = 0for i in range(1, tempFileNo + 1): print("比较第{0}个临时文件...\n".format(i)) if 0 == tempIndex: resultTempFile = "result0" tempIndex = 1 else: resultTempFile = "result1" tempIndex = 0 fResult = open(resultTempFile, "w+") fTemp = open("temp{0}".format(i)) lineSet = fTemp.readlines() fTemp.close() lineList = list(lineSet) lineList.sort() line = fA.readline() while line: if 0 == binarySearch(line, lineList): fResult.write(line) else: fOut.write(line) repeatCount = repeatCount + 1 line = fA.readline() fA.close() fResult.flush() fResult.close() fA = open(resultTempFile)fA.close()fOut.flush()fOut.close()print("比较完成，重复数据{0}条".format(repeatCount))os.rename(resultTempFile, "result")#STEP3：结束后把临时文件都删掉print("删除临时文件...\n")while tempFileNo > 0: tempFileName = "temp{0}".format(tempFileNo) os.remove(tempFileName) tempFileNo = tempFileNo - 1print("脚本结束。\n")

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