Traverse (walk) a directory tree, match filenames provided in csv, copy matched file to another directory

dir-crawl-copy.py

import os
import shutil
import csv

# to store filenames provided in csv
filenames = []

# read single column csv of filenames (no extension)
csv_path = 'parts.csv'
with open(csv_path, newline='') as csvfile:
    filenameRdr = csv.reader(csvfile, delimiter=',')
    for row in filenameRdr:
        print('appending filename', row[0])
        filenames.append(row[0] + '.pdf')

print('list of filenames from csv %s' % filenames)

# base directory to copy from
base_dir = os.path.normpath("C:/some_directory")
# directory to copy to
copy_dir = os.path.normpath("C:/some_new_directory")

# to store failures (non match filenames from csv)
failures = []

# to store filenames found in the base_dir
jfilelist = []

print('writing files')
# walk traverses the directory's entire structure
for root, dirs, files in os.walk(base_dir):
    # append all filenames found in base_dir to list
    for f in files:
        jfilelist.append(f)
        # try copying the file
        if f in filenames:
            try:
                print('writing %s to tyler_temp directory' % os.path.join(root, f))
                shutil.copy(os.path.join(root, f), copy_dir)
            except: 
                pass # handle error here

# this is where we log the failures
for fn in filenames:
    if fn not in jfilelist:
        failures.append(fn)

# write the failures to txt file
with open(os.path.normpath("J:/Instructions/tyler_temp/failures.txt"), "w") as failFile:
    for fail in failures:
        failFile.write('\n%s' % fail)

print('these items failed: %s' % failures)