I have a directory with several hundred thousand files in it.
They all follow this format:
datetime_fileid_metadata_collect.txt
A specific example looks like this :
201405052359559_0002230255_35702088_collect88.txt
I am trying to write a script that pulls out and copies individual files when all I provide it is a list of file ids.
For example I have a text document fileids.txt that constains this
fileids.txt
0002230255
0001627237
0001023000
This is the example script I have written so far. file1 result keeps returning []
import os
import re, glob, shutil
base_dir = 'c:/stuff/tub_0_data/'
destination = 'c:/files_goes_here'
os.chdir(base_dir)
text_file = open('c:/stuff/fileids.txt', 'r')
file_ids = text_file.readlines()
#file_ids = [stripped for stripped in (line.strip() for line in text_file.readlines()) if stripped]
for ids in file_ids:
id1 = ids.rstrip()
print 'file id = ',str(id1)
file1 = glob.glob('*' + str(id1) + '*')
print str(file1)
if file1 != []:
shutil.copy(base_dir + file1, destination)
I know I dont fully understand glob or regular expressions yet. What would I put there if I want to find files based off of a specific string of their filename?
EDIT:
glob.glob('*' + stuff '*')
worked for finding things within the filename. Not removing linespace was the issue.
text_file.readlines() reads the entire line including the trailing '\\n'. Try stripping it. The following will strip newlines and remove empties:
file_ids = [line.strip() for line in text_file if not line.isspace()]
Your issue might have been linespace and it might have been answered, but I think you can do with some cleaning up of the code. Admittedly, I don't see the need for the import os
and import sys
, unless they are part of your bigger code.
Something like the following works well enough.
Code:
import glob
import shutil
base_dir = "C:/Downloads/TestOne/"
dest_dir = "C:/Downloads/TestTwo/"
with open("blah.txt", "rb") as ofile:
lines = [line.strip() for line in ofile.readlines()]
for line in lines:
print "File ID to Process: {}".format(line)
pattern_ = base_dir + "*" + str(line) + "*"
print pattern_
file_ = glob.glob(pattern_)
print str(file_[0])
shutil.copy(file_[0], dest_dir)
print "{} copied.".format(file_[0])
Output:
File ID to Process: 123456
C:/Downloads/TestOne/*123456*
C:/Downloads/TestOne\foobar_123456_spam.txt
C:/Downloads/TestOne\foobar_123456_spam.txt copied.
[Finished in 0.4s]
glob
is a rather expensive operation though. You're better off listing the files on the get-go and match them afterwards, copying as you hit a match. Hope this helps.
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