A resposta do LPChip é a melhor.
Mas como comecei a aprender Python, pensei: "Por que não escrever um script Python como resposta a essa pergunta?"
Instalar o Python e o Send2Trash
Você precisaria instalar o Python antes de poder executar o script a partir da linha de comando.
Em seguida, instale Send2Trash para que os arquivos excluídos não fiquem irremediavelmente, mas acabem na lixeira do sistema operacional:
pip install Send2Trash
Criar script
Crie um novo arquivo com, por exemplo, o nome DeleteDuplicateInFolderA.py
Copie o seguinte script no arquivo.
#!/usr/bin/python
import sys
import os
from send2trash import send2trash
class DeleteDuplicateInFolderA(object):
"""Given two paths A and B, the application determines which files are in
path A which are also in path B and then deletes the duplicates from
path A.
If the "dry run" flag is set to 'true', files are deleted. Otherwise
they are only displayed but not deleted.
"""
def __init__(self, path_A, path_B, is_dry_run=True):
self._path_A = path_A
self._path_B = path_B
self._is_dry_run = is_dry_run
def get_filenames_in_folder(self, folder_path):
only_files = []
for (dirpath, dirnames, filenames) in os.walk(folder_path):
only_files.extend(filenames)
return only_files
def print_files(sel, heading, files):
print(heading)
if len(files) == 0:
print(" none")
else:
for file in files:
print(" {}".format(file))
def delete_duplicates_in_folder_A(self):
only_files_A = self.get_filenames_in_folder(self._path_A)
only_files_B = self.get_filenames_in_folder(self._path_B)
files_of_A_that_are_in_B = [file for file in only_files_A if file in only_files_B]
self.print_files("Files in {}".format(self._path_A), only_files_A)
self.print_files("Files in {}".format(self._path_B), only_files_B)
if self._is_dry_run:
self.print_files("These files would be deleted: ", [os.path.join(self._path_A, file) for file in files_of_A_that_are_in_B])
else:
print("Deleting files:")
for filepath in [os.path.join(self._path_A, file) for file in files_of_A_that_are_in_B]:
print(" {}".format(filepath))
# os.remove(filepath) # Use this line instead of the next if Send2Trash is not installed
send2trash(filepath)
if __name__ == "__main__":
if len(sys.argv) == 4:
is_dry_run_argument = sys.argv[3]
if not is_dry_run_argument == "--dryrun":
println("The 3rd argument must be '--dryrun' or nothing.")
else:
app = DeleteDuplicateInFolderA(sys.argv[1], sys.argv[2], is_dry_run=True)
else:
app = DeleteDuplicateInFolderA(sys.argv[1], sys.argv[2], is_dry_run=False)
app.delete_duplicates_in_folder_A()
Uso
Modo de execução a seco, que mostra quais arquivos seriam excluídos sem realmente excluir nenhum arquivo:
c:\temp> python .\DeleteDuplicateInFolderA.py c:\temp\test\A c:\temp\test\B --dryrun
Modo de exclusão de arquivos, que de fato exclui arquivos, por isso tome cuidado:
c:\temp> python .\DeleteDuplicateInFolderA.py c:\temp\test\A c:\temp\test\B
Saída do modo de funcionamento a seco
Files in C:\temp\A
1.txt
2.txt
Files in C:\temp\B
2.txt
3.txt
These files would be deleted:
C:\temp\A.txt
Saída do modo de exclusão de arquivos
Files in C:\temp\A
1.txt
2.txt
Files in C:\temp\B
2.txt
3.txt
Deleting files:
C:\temp\A.txt
Teste de unidade
Se você quiser testar o aplicativo acima, crie um arquivo chamado DeleteDuplicateInFolderATest.py e cole esses testes unitários:
import unittest
import os
import shutil
from DeleteDuplicateInFolderA import DeleteDuplicateInFolderA
class DeleteDuplicateInFolderATest(unittest.TestCase):
def __init__(self, *args, **kwargs):
super(DeleteDuplicateInFolderATest, self).__init__(*args, **kwargs)
self._base_directory = r"c:\temp\test"
self._path_A = self._base_directory + r"\A"
self._path_B = self._base_directory + r"\B"
def create_folder_and_create_some_files(self, path, filename_list):
if os.path.exists(path):
shutil.rmtree(path)
os.makedirs(path)
for filename in filename_list:
open(os.path.join(path, filename), "w+").close()
def setUp(self):
# Create folders and files for testing
self.create_folder_and_create_some_files(self._path_A, ["1.txt", "2.txt"])
self.create_folder_and_create_some_files(self._path_B, ["2.txt", "3.txt"])
def tearDown(self):
for path in [self._path_A, self._path_B, self._base_directory]:
if os.path.exists(path):
shutil.rmtree(path)
def test_duplicate_file_gets_deleted(self):
# Arrange
app = DeleteDuplicateInFolderA(self._path_A, self._path_B, is_dry_run=False)
# Act
app.delete_duplicates_in_folder_A()
# Assert
self.assertFalse(os.path.isfile(self._path_A + r".txt"), "File 2.txt has not been deleted.")
def test_duplicate_file_gets_not_deleted_in_mode_dryrun(self):
# Arrange
app = DeleteDuplicateInFolderA(self._path_A, self._path_B, is_dry_run=True)
# Act
app.delete_duplicates_in_folder_A()
# Assert
self.assertTrue(os.path.isfile(self._path_A + r".txt"), "File 2.txt should not have been deleted in mode '--dryrun'")
def main():
unittest.main()
if __name__ == '__main__':
main()
