Python遍历目录并查找文件内容

在做Android逆向的时候，dex文件转成smail文件之后，需要查找哪个smail文件中包含的关键字。下面这段代码：

findCount为查找到的文件个数

findId为要查找的内容

findDir为要查找的文件夹

#encoding: utf-8
import os

findCount = 0
findId = "QString"
findDir = "F:\\calc"

resultFile = os.path.join(findDir,"result.txt")

def writeResultAndPrint(fullPath):
print (fullPath)
file = open(resultFile,'a')
file.write(fullPath)
file.write("\n")
file.close()

def findKey(fullPath):
file = open(fullPath,'r')
content = file.read()
file.close()

isExist = content.find(findId)
if isExist > 0:
global findCount
findCount = findCount + 1
writeResultAndPrint(fullPath)

def findFiles():
for dirPath,dirNames,fileNames in os.walk(findDir):
for file in fileNames:
fullPath = os.path.join(dirPath,file)
findKey(fullPath)

print("找到了字符串个数=" + str(findCount))

def clean():
if os.path.exists(resultFile):
os.remove(resultFile)

clean()
findFiles()