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Copy Files - Python

Posted on 2016-10-10
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Last Modified: 2016-10-12
Hello Experts-

I am trying to copy a files in one directory source to destination directory.

ex: copy and overwrite all files in c:\source to c:\destination

What is the easiest way to do this?
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Question by:sj77
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7 Comments
 
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Expert Comment

by:pepr
ID: 41837443
Have a look at the built-in shutil module (stands for shell utilities).

You will find copy() and copy2(), and copytree().
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Author Comment

by:sj77
ID: 41837444
@pepr I did this and it worked.

Do you think it would be best to wild card for *.mdb or just leave the code as is?

import os
import shutil
os.chdir('C:\\') #Make sure you add your source and destination path below

dir_src = ("C:\\source\\")
dir_dst = ("C:\\destination\\")

for filename in os.listdir(dir_src):
    if filename.endswith('.mdb'):
        shutil.copy( dir_src + filename, dir_dst)
    print(filename)

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LVL 28

Expert Comment

by:pepr
ID: 41837491
It depends. Firstly, the line 3 does nothing for the purpose. The lines 5 and 6 should not use parentheses, and probably should use single quotes (for consistency). The glob module allows you to work with the mask directly. Anyway, I recommend to get used to os.path.join() function. It solves all problems with missing/extra (back)slashes in the path.

Get used to normal slashes. One day, you may want to move your code to UNIX-based OS, and it will be easier. You get nothing when using backslashes. For print, use os.path.normpath() if you are picky.

If you want to copy also the last modification time... use copy2().

Print filename usually before the operation. When it crashes, you will know for what file.

#!python3

import glob
import os
import shutil

dir_src = 'C:/source'
dir_dst = 'C:/destination'

for filename in glob.iglob(os.path.join(dir_src, '*.mdb')):
    print(filename)
    shutil.copy(filename, dir_dst)

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If you need to construct both paths (source and destination), then probably os.listdir() with os.path.join() is better.
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Expert Comment

by:ltpitt
ID: 41839984
If you provide us a better description of the final tool you plan to build maybe we can point you in the right direction
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Author Comment

by:sj77
ID: 41840585
@pepr if I want to move files in a directory to a different destination after this copy has been done how would this be done?

example: c:\source and c:\dest

copy gets done first > program action > then move files in c:\dest to c:\dest_final?
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Author Comment

by:sj77
ID: 41840640
essentially i want to move and delete from source folder
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Accepted Solution

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pepr earned 500 total points
ID: 41840907
Use the shutil.move() function instead of the copy() -- see https://docs.python.org/3.5/library/shutil.html#shutil.move
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