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hey #3

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7f580e7
added a check to make sure no files are overwriten during the rename
mSenyor Dec 14, 2014
49b6736
edited argv assignment to ignore the 0 index item
mSenyor Dec 14, 2014
c9f6722
added new line at end of file
mSenyor Dec 14, 2014
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14 changes: 9 additions & 5 deletions batch_file_rename.py
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Original file line number Diff line number Diff line change
Expand Up @@ -9,17 +9,21 @@
# Description : This will batch rename a group of files in a given directory, once you pass the current and new extensions

import os # Load the library module
import sys # Load the library module
from sys import argv # imports argv from sys to take arguments given in the command line when the program is initiated

work_dir=sys.argv[1] # Set the variable work_dir with the first argument passed
old_ext=sys.argv[2] # Set the variable work_dir with the first argument passed
new_ext=sys.argv[3] # Set the variable work_dir with the first argument passed
work_dir, old_ext, new_ext = argv[1:] # work_dir is the work directory, old_ext and new_ext are the current and wanted file extentions respectively.

files = os.listdir(work_dir) # Set the variable files, by listing everything in the directory
for filename in files: # Loop through the files
file_ext = os.path.splitext(filename)[1] # Get the file extension
if old_ext == file_ext: # Start of the logic to check the file extensions, if old_ext = file_ext
newfile = filename.replace(old_ext, new_ext) # Set newfile to be the filename, replaced with the new extension
while os.path.isfile(newfile): # Check if the new file name already exists to prevent overwrite
num = 2 # a number to add to the file name
num_new_ext = "_" + str(num) + new_ext # creates a new string to append to the end of file name
newfile = filename.replace(old_ext, num_new_ext) # apply changes to the new file name
num += 1 # increment the number in case the name still exists
os.rename( # Write the files
os.path.join(work_dir, filename),
os.path.join(work_dir, newfile))
os.path.join(work_dir, newfile))