Moving specific files in subdirectories into a directory - python
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02-03-2021 - |
Вопрос
Im rather new to python but I have been attemping to learn the basics to help in my research within geology.
Anyways I have several files that once i have extracted from their zip files (painfully slow process btw) produce several hundred subdirectories with 2-3 files in each. Now what I want to do is extract all those files ending with 'dem.tif' and place them in a seperate file (move not copy).
I may have attempted to jump into the deep end here but the code i've written runs without error so it must not be finding the files (that do exist!) as it gives me the else statement. Here is the code i've created
import os
src = 'O:\DATA\ASTER GDEM\Original\North America\UTM Zone 14\USA\Extracted' # input
dst = 'O:\DATA\ASTER GDEM\Original\North America\UTM Zone 14\USA\Analyses' # desired location
def move():
for (dirpath, dirs, files) in os.walk(src):
if files.endswith('dem.tif'):
shutil.move(os.path.join(src,files),dst)
print ('Moving ', + files, + ' to ', + dst)
else:
print 'No Such File Exists'
Решение
First, welcome to the community, and python! You might want to change your user name, especially if you frequent here. :)
I suggest the following (stolen from Mr. Beazley):
# genfind.py
#
# A function that generates files that match a given filename pattern
import os
import shutil
import fnmatch
def gen_find(filepat,top):
for path, dirlist, filelist in os.walk(top):
for name in fnmatch.filter(filelist,filepat):
yield os.path.join(path,name)
# Example use
if __name__ == '__main__':
src = 'O:\DATA\ASTER GDEM\Original\North America\UTM Zone 14\USA\Extracted' # input
dst = 'O:\DATA\ASTER GDEM\Original\North America\UTM Zone 14\USA\Analyses' # desired location
filesToMove = gen_find("*dem.tif",src)
for name in filesToMove:
shutil.move(name, dst)
Другие советы
Update: the questioner has clarified below that he / she is actually calling the move function, which was the first point in my answer.
There are a few other things to consider:
- You've got the order of elements returned in each tuple from
os.walk
wrong, I'm afraid - check the documentation for that function. - Assuming you've fixed that, also bear in mind that you need to iterate over
files
, and you need toos.join
each of those toroot
, rather thansrc
- The above would be obvious, hopefully, if you print out the values returned by
os.walk
and comment out the rest of the code in that loop. - With code that does potentially destructive operations like moving files, I would always first try some code that just prints out the parameters to
shutil.move
until you're sure that it's right.
I think you've mixed up the way you should be using os.walk()
.
for dirpath, dirs, files in os.walk(src):
print dirpath
print dirs
print files
for filename in files:
if filename.endswith('dem.tif'):
shutil.move(...)
else:
...
Any particular reason you need to do it in Python? Would a simple shell command not be simpler? If you're on a Unix-like system, or have access to Cygwin on Windows:
find src_dir -name "*dem.tif" -exec mv {} dst_dir