处理python 3.0中的所有unicodeDecodeerror

Question

import os, fnmatch
    def findReplace(directory, find, replace, filePattern):
      for path, dirs, files in os.walk(os.path.abspath(directory)):
        for filename in fnmatch.filter(files, filePattern):
            filepath = os.path.join(path, filename)
            enc='utf-8'
            with open(filepath,"r",encoding=enc) as f:
                s = f.read()
                try:
                    s = s.encode("iso-8859-1").decode("utf-8")
                except (UnicodeEncodeError, UnicodeDecodeError):
                    pass
            s = s.replace(find, replace)
            with open(filepath, "w",encoding='utf-8', errors='ignore' ) as f:
                f.write(s)



def main():

    mylist = [ ("findstring", "replacestring")]
    for item in mylist:
        findReplace('.', item[0], item[1], '*.*')

if __name__=="__main__":
    main()

我正在尝试搜索并替换给定文件夹内所有文件中的字符串。 Folder有各种文件及其窗口服务器。 我正在使用python 3.0。如何避免Unicodedecode错误？