IOError Errno 2 No such file or directory trying to open a file

Question

I am very new to Python so please forgive the following basic code and problem  but I have been trying to figure out what is causing the error I am getting  I have even looked at similar threads on S O   but can t get past my issue   Here is what I am trying to do    loop through a folder of CSV files search for a  keyword  and delete all lines containing the  keyword  save output to a separate folder   Here is my code   import os  fnmatch import shutil  src dir    C  temp CSV  target dir    C  temp output2  keyword    KEYWORD   for f in os listdir src dir       os path join src dir  f      with open f           for line in f              if keyword not in line                  write line                  shutil copy2 os path join src dir  f   target dir    Here is the error I am getting   IOError   Errno 2  No such file or directory   POS 03217 20120309 153244 csv    I have confirmed that the folder and file do exist  What is causing the IOError and how to I resolve it  Also  is there anything else wrong with my code that would prevent me from performing the entire task

User · Answer

I got this error and fixed by appending the directory path in the loop  script not in the same directory as the files  dr1     test  directory variable   fileop open dr1     fil  r

User · Answer

Um     with open os path join src dir  f   as fin      for line in fin    Also  you never output to a new file

User · Answer

Even though  Ignacio gave you a straightforward solution  I thought I might add an answer that gives you some more details about the issues with your code       You are not saving this result into a variable to reuse os path join src dir  f    Should be src path   os path join src dir  f     you open the file but you dont again use a variable to reference with open f    should be with open src path  as fh    this is actually just looping over each character    in each result of your os listdir for line in f   you should loop over lines in the open file handle for line in fh    write  Is this a method you wrote because its not a python builtin function write line    write to the file fh write line

User · Answer

Just as an FYI  here is my working code   src dir    C   temp  CSV    target dir    C   temp  output2    keyword    KEYWORD   for f in os listdir src dir       file name   os path join src dir  f      out file   os path join target dir  f      with open file name   r    as fi  open out file   w   as fo          for line in fi              if keyword not in line                  fo write line    Thanks again to everyone for all the great feedback

User · Answer

Hmm  there are a few things going wrong here    for f in os listdir src dir       os path join src dir  f    You re not storing the result of join  This should be something like    for f in os listdir src dir       f   os path join src dir  f    This open call is is the cause of your IOError   Because without storing the result of the join above  f was still just  file csv   not  src dir file csv      Also  the syntax   with open f      is close  but the syntax isn t quite right  It should be with open file name  as file object   Then  you use to the file object to perform read or write operations    And finally    write line    You told python what you wanted to write  but not where to write it  Write is a method on the file object  Try file object write line     Edit  You re also clobbering your input file  You probably want to open the output file and write lines to it as you re reading them in from the input file    See  input   output in python

[python] IOError: [Errno 2] No such file or directory trying to open a file

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