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我正在尝试编写一个脚本来查找包含文本字符串的文件。这些文件位于远程主机上，但是当我运行它时，出现错误

Traceback（最近一次调用最后一次）：文件“dirsearch.py​​”，第 55 行，在 fo = open(search_path + fname) IOError：[Errno 2] 没有这样的文件或目录：u'/home/black/white/goto/报告/dbs-01-Apr-2017.log'

我使用的脚本如下。

from __future__ import unicode_literals
from __future__ import division
from __future__ import absolute_import
from builtins import input
from builtins import open
from future import standard_library
standard_library.install_aliases()

import pysftp 

#connect to sftp server
srv = pysftp.Connection(host="host", username="username",
password="password")

#acess remote directory on server
search_path = ('/home/black/white/goto/reports/')

file_type = '.log'
search_str = input("Enter the search string : ")

#addition ........or fname in os.listdir(path=search_path):

for fname in srv.listdir(search_path):

   # Apply file type filter   
   if fname.endswith(file_type):

        # Open file for reading

        fo = open(search_path + fname)

        # Read the first line from the file
        line = fo.readline()

        # Initialize counter for line number
        line_no = 1

        # Loop until EOF
        while line != '' :
                # Search for string in line
                index = line.find(search_str)
                if ( index != -1) :
                    print(fname, "[", line_no, ",", index, "] ", line, sep="")

                # Read next line
                line = fo.readline()  

                # Increment line counter
                line_no += 1
        # Close the files
        fo.close()

srv.close()
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