🐛 fix unclosed file

10 files changed, 192 insertions, 182 deletions

diff --git a/archaeological_context_records/tests.py b/archaeological_context_records/tests.py
index 79dd502ac..852cd3aa7 100644
--- a/archaeological_context_records/tests.py
+++ b/archaeological_context_records/tests.py
@@ -87,10 +87,10 @@ class ImportContextRecordTest(ImportTest, TestCase):
         filename = root + "importer-GIS-UE.zip"
         self.restore_serialized(filename)
         imp_type = ImporterType.objects.get(name="GIS - UE")
-        imp_file = open(root + data_name, "rb")
-        file_dict = {
-            "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
-        }
+        with open(root + data_name, "rb") as imp_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
+            }
         post_dict = {
             "importer_type": imp_type.pk,
             "name": "cr_geo_import",
@@ -1889,7 +1889,8 @@ class GraphGenerationTest(ContextRecordInit, TestCase):
         self.assertIsNotNone(cr_2.relation_image)
         self.assertIsNotNone(cr_2.relation_bitmap_image)
         self.assertIsNotNone(cr_2.relation_dot)
-        content = open(cr_2.relation_dot.path).read()
+        with open(cr_2.relation_dot.path) as f:
+            content = f.read()
         self.assertIn('"CR 1"', content)
         self.assertIn('"CR 1B"', content)
         self.assertIn('"CR 2B"', content)
@@ -1907,7 +1908,8 @@ class GraphGenerationTest(ContextRecordInit, TestCase):
         self.assertIsNotNone(operation.relation_image)
         self.assertIsNotNone(operation.relation_bitmap_image)
         self.assertIsNotNone(operation.relation_dot)
-        content = open(operation.relation_dot.path).read()
+        with open(operation.relation_dot.path) as f:
+            content = f.read()
         self.assertIn('"CR 1"', content)
         self.assertIn('"CR 1B"', content)
         self.assertIn('"CR 2B"', content)
@@ -1924,7 +1926,8 @@ class GraphGenerationTest(ContextRecordInit, TestCase):
         self.assertIsNotNone(cr_2.relation_image_above)
         self.assertIsNotNone(cr_2.relation_bitmap_image_above)
         self.assertIsNotNone(cr_2.relation_dot_above)
-        content = open(cr_2.relation_dot_above.path).read()
+        with open(cr_2.relation_dot_above.path) as f:
+            content = f.read()
         self.assertNotIn('"CR 1"', content)
         self.assertNotIn('"CR 1B"', content)
         self.assertIn('"CR 2B"', content)
@@ -1941,7 +1944,8 @@ class GraphGenerationTest(ContextRecordInit, TestCase):
         self.assertIsNotNone(cr_2.relation_image_below)
         self.assertIsNotNone(cr_2.relation_bitmap_image_below)
         self.assertIsNotNone(cr_2.relation_dot_below)
-        content = open(cr_2.relation_dot_below.path).read()
+        with open(cr_2.relation_dot_below.path) as f:
+            content = f.read()
         self.assertIn('"CR 1"', content)
         self.assertIn('"CR 1B"', content)
         self.assertIn('"CR 2B"', content)
diff --git a/archaeological_finds/tests.py b/archaeological_finds/tests.py
index 8e1c3f970..00eeef09e 100644
--- a/archaeological_finds/tests.py
+++ b/archaeological_finds/tests.py
@@ -658,10 +658,10 @@ class ImportFindTest(BaseImportFindTest):
         filename = root + data_name + ".zip"
         self.restore_serialized(filename)
         imp_type = ImporterType.objects.get(slug="topographie-mobilier")
-        imp_file = open(root + data_name + ".csv", "rb")
-        file_dict = {
-            "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
-        }
+        with open(root + data_name + ".csv", "rb") as imp_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
+            }
         post_dict = {
             "importer_type": imp_type.pk,
             "name": "find_geo_import",
@@ -713,7 +713,7 @@ class ImportFindTest(BaseImportFindTest):
     def test_group_import(self):
         imp_group, imp_file, imp_media = self.get_group_import()
         file_dict = {
-            "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
+            "imported_file": imp_file
         }
         post_dict = {
             "importer_type": imp_group.pk,
@@ -726,8 +726,9 @@ class ImportFindTest(BaseImportFindTest):
             data=post_dict, files=file_dict, user=self.user
         )
         self.assertFalse(form.is_valid())
-        self.assertIn(str(_("This importer need a document archive.")), form.errors["__all__"])
-        file_dict["imported_images"] = SimpleUploadedFile(imp_media.name, imp_media.read())
+        self.assertIn(str(_("This importer need a document archive.")),
+                      form.errors["__all__"])
+        file_dict["imported_images"] = imp_media
         form = forms_common.NewImportGroupForm(
             data=post_dict, files=file_dict, user=self.user
         )
@@ -739,7 +740,6 @@ class ImportFindTest(BaseImportFindTest):
         nb_find = models.Find.objects.count()
         nb_container = Container.objects.count()
         nb_docs = Document.objects.count()
-
         impt.importation()
 
         self.assertEqual(models.BaseFind.objects.count(), nb_base_find + 1)
@@ -760,17 +760,19 @@ class ImportFindTest(BaseImportFindTest):
         ImportTarget.objects.create(
             target="documents__image", formater_type_id=formater.pk, column_id=col.pk
         )
-        mcc_file = open(
-            settings.LIB_BASE_PATH + "archaeological_finds/tests/MCC-finds-example.csv",
-            "rb",
-        )
-        mcc_images = open(
-            settings.LIB_BASE_PATH + "archaeological_finds/tests/images.zip", "rb"
-        )
-        file_dict = {
-            "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read()),
-            "imported_images": SimpleUploadedFile(mcc_images.name, mcc_images.read()),
-        }
+        file_dict = {}
+        with open(
+                settings.LIB_BASE_PATH +
+                "archaeological_finds/tests/MCC-finds-example.csv", "rb") as mcc_file:
+            file_dict["imported_file"] = SimpleUploadedFile(
+                mcc_file.name, mcc_file.read()
+            )
+        with open(
+                settings.LIB_BASE_PATH +
+                "archaeological_finds/tests/images.zip", "rb") as mcc_file:
+            file_dict["imported_images"] = SimpleUploadedFile(
+                mcc_file.name, mcc_file.read()
+            )
         post_dict = {
             "importer_type": MCC.pk,
             "skip_lines": 1,
@@ -907,10 +909,10 @@ class ImportFindTest(BaseImportFindTest):
                         ]
                     )
 
-        imp_file = open(imp_filename, "rb")
-        file_dict = {
-            "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
-        }
+        with open(imp_filename, "rb") as imp_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read())
+            }
         post_dict = {
             "importer_type": importer_type.pk,
             "skip_lines": 1,
@@ -1066,13 +1068,13 @@ class ImportFindLiveServerTest(LiveServerTestCase, BaseImportFindTest):
         ImportTarget.objects.create(
             target="documents__image", formater_type_id=formater.pk, column_id=col.pk
         )
-        mcc_file = open(
-            settings.LIB_BASE_PATH + "archaeological_finds/tests/MCC-finds-example.csv",
-            "rb",
-            )
-        file_dict = {
-            "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read()),
-        }
+        with open(
+                settings.LIB_BASE_PATH +
+                "archaeological_finds/tests/MCC-finds-example.csv",
+                "rb") as mcc_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read()),
+            }
         post_dict = {
             "importer_type": MCC.pk,
             "skip_lines": 1,
@@ -1759,12 +1761,13 @@ class FindSearchTest(FindInit, TestCase, SearchText):
         image_path = (
             settings.LIB_BASE_PATH + "ishtar_common/static/media/images/ishtar-bg.jpg"
         )
-        document.image = SimpleUploadedFile(
-            name="ishtar-bg.jpg",
-            content=open(image_path, "rb").read(),
-            content_type="image/jpeg",
-        )
-        document.save()
+        with open(image_path, "rb") as content:
+            document.image = SimpleUploadedFile(
+                name="ishtar-bg.jpg",
+                content=content.read(),
+                content_type="image/jpeg",
+            )
+            document.save()
 
         self.finds[0].documents.add(document)
         self.finds[0].save()
@@ -2796,7 +2799,8 @@ class TreatmentTest(FindInit, TestCase):
         self.create_finds(data_base={"label": "Find 1"}, force=True)
         self.create_finds(data_base={"label": "Find 2"}, force=True)
         image = Document.objects.create(title="Image!")
-        image.image.save("ishtar-bg.jpg", File(open(img, "rb")))
+        with open(img, "rb") as cimg:
+            image.image.save("ishtar-bg.jpg", File(cimg))
         self.finds[0].documents.add(image)
         self.finds[0].save()
 
diff --git a/archaeological_operations/tests.py b/archaeological_operations/tests.py
index f676a8300..a00679536 100644
--- a/archaeological_operations/tests.py
+++ b/archaeological_operations/tests.py
@@ -182,14 +182,14 @@ class ImportTest(BaseImportTest):
 
     def init_ope_import(self, filename="MCC-operations-example.csv", sep=","):
         mcc_operation = ImporterType.objects.get(name="MCC - Opérations")
-        mcc_operation_file = open(
-            settings.LIB_BASE_PATH + "archaeological_operations/tests/" + filename, "rb"
-        )
-        file_dict = {
-            "imported_file": SimpleUploadedFile(
-                mcc_operation_file.name, mcc_operation_file.read()
-            )
-        }
+        with open(
+                settings.LIB_BASE_PATH + "archaeological_operations/tests/" + filename,
+                "rb") as mcc_operation_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(
+                    mcc_operation_file.name, mcc_operation_file.read()
+                )
+            }
         group, c = TargetKeyGroup.objects.get_or_create(name="My group")
         post_dict = {
             "importer_type": mcc_operation.pk,
@@ -290,14 +290,13 @@ class ImportTest(BaseImportTest):
     def init_parcel_import(self):
         self.init_ope()
         mcc_parcel = ImporterType.objects.get(name="MCC - Parcelles")
-        mcc_file = open(
-            settings.LIB_BASE_PATH +
-            "archaeological_operations/tests/MCC-parcelles-example.csv",
-            "rb",
-        )
-        file_dict = {
-            "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read())
-        }
+        with open(
+                settings.LIB_BASE_PATH +
+                "archaeological_operations/tests/MCC-parcelles-example.csv",
+                "rb") as mcc_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read())
+            }
         post_dict = {
             "importer_type": mcc_parcel.pk,
             "skip_lines": 1,
@@ -320,14 +319,12 @@ class ImportTest(BaseImportTest):
     def init_context_record_import(self):
         self.init_parcel()
         mcc = ImporterType.objects.get(name="MCC - UE")
-        mcc_file = open(
-            settings.LIB_BASE_PATH + "archaeological_context_records/tests/"
-            "MCC-context-records-example.csv",
-            "rb",
-        )
-        file_dict = {
-            "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read())
-        }
+        with open(
+                settings.LIB_BASE_PATH + "archaeological_context_records/tests/"
+                "MCC-context-records-example.csv", "rb") as mcc_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(mcc_file.name, mcc_file.read())
+            }
         post_dict = {
             "importer_type": mcc.pk,
             "skip_lines": 1,
@@ -817,15 +814,14 @@ class ImportDocumentTest(ImportTest, TestCase):
             target="title", formater_type_id=formater.pk, column_id=col.pk
         )
 
-        doc_import_file = open(
-            settings.LIB_BASE_PATH + "archaeological_operations/tests/" + filename, "rb"
-        )
-
-        file_dict = {
-            "imported_file": SimpleUploadedFile(
-                doc_import_file.name, doc_import_file.read()
-            )
-        }
+        with open(
+                settings.LIB_BASE_PATH + "archaeological_operations/tests/" + filename,
+                "rb") as doc_import_file:
+            file_dict = {
+                "imported_file": SimpleUploadedFile(
+                    doc_import_file.name, doc_import_file.read()
+                )
+            }
 
         group, c = TargetKeyGroup.objects.get_or_create(name="My group")
         post_dict = {
@@ -4375,12 +4371,11 @@ class RegisterTest(TestCase, OperationInitTest):
         self.assertEqual(json.loads(response.content.decode())["recordsTotal"], 1)
 
     def test_document_generation(self):
-        tpl = open(
-            settings.LIB_BASE_PATH +
-            "archaeological_operations/tests/document_reference.odt",
-            "rb",
-        )
-        template = SimpleUploadedFile(tpl.name, tpl.read())
+        with open(
+                settings.LIB_BASE_PATH +
+                "archaeological_operations/tests/document_reference.odt",
+                "rb") as tpl:
+            template = SimpleUploadedFile(tpl.name, tpl.read())
         model, __ = ImporterModel.objects.get_or_create(
             klass="archaeological_operations.models.AdministrativeAct"
         )
diff --git a/ishtar_common/data_importer.py b/ishtar_common/data_importer.py
index 4259e1b8a..7df66a672 100644
--- a/ishtar_common/data_importer.py
+++ b/ishtar_common/data_importer.py
@@ -647,7 +647,6 @@ class FileFormater(Formater):
         return my_file
 
     def _format_zip(self, value, archive):
-        zp = zipfile.ZipFile(archive)
         value = value.strip().replace("\\", "/")
         items = value.replace("/", "_").split(".")
         base_dir = settings.MEDIA_ROOT + "imported"
@@ -656,14 +655,15 @@ class FileFormater(Formater):
         filename = base_dir + os.sep + ".".join(items[:-1]) + "." + items[-1]
 
         try:
-            with open(filename, "wb") as f:
-                with zp.open(value) as z:
-                    f.write(z.read())
-            f = open(filename, "rb")
-            my_file = File(f)
-            # manually set the file size because of an issue with TempFile
-            my_file.size = os.stat(filename).st_size
-            return my_file
+            with zipfile.ZipFile(archive) as zp:
+                with open(filename, "wb") as f:
+                    with zp.open(value) as z:
+                        f.write(z.read())
+                f = open(filename, "rb")
+                my_file = File(f)
+                # manually set the file size because of an issue with TempFile
+                my_file.size = os.stat(filename).st_size
+                return my_file
         except KeyError:
             raise ValueError(
                 _('"%(value)s" is not a valid path for the given archive')
diff --git a/ishtar_common/forms_common.py b/ishtar_common/forms_common.py
index a5d02b11e..af1a24df0 100644
--- a/ishtar_common/forms_common.py
+++ b/ishtar_common/forms_common.py
@@ -443,6 +443,8 @@ class NewImportForm(BaseImportForm):
         # media is downloaded - clean the link
         item.imported_media_link = None
         item.save()
+        if hasattr(temp_file, "close"):
+            temp_file.close()
         return item
 
 
diff --git a/ishtar_common/models_imports.py b/ishtar_common/models_imports.py
index 363b2a1c0..ec300019c 100644
--- a/ishtar_common/models_imports.py
+++ b/ishtar_common/models_imports.py
@@ -1907,11 +1907,13 @@ class ImportGroup(BaseImport):
         imports = []
         imported_file, imported_images = None, None
         if self.imported_file:
-            imported_file = ContentFile(self.imported_file.read())
-            imported_file.name = self.imported_file.name.split(os.sep)[-1]
+            with open(self.imported_file.path, "rb") as imp:
+                imported_file = ContentFile(imp.read())
+                imported_file.name = self.imported_file.name.split(os.sep)[-1]
         if self.imported_images:
-            imported_images = ContentFile(self.imported_images.read())
-            imported_images.name = self.imported_images.name.split(os.sep)[-1]
+            with open(self.imported_images.path, "rb") as imp:
+                imported_images = ContentFile(imp.read())
+                imported_images.name = self.imported_images.name.split(os.sep)[-1]
 
         for import_type_relation in self.importer_type.importer_types.all():
             importer_type = import_type_relation.importer_type
diff --git a/ishtar_common/tasks.py b/ishtar_common/tasks.py
index 55c704ab1..24ae02dcc 100644
--- a/ishtar_common/tasks.py
+++ b/ishtar_common/tasks.py
@@ -173,13 +173,13 @@ def launch_export(export_task_id):
     if not export_task.geo:
         kwargs["no_geo"] = True
     archive_name = full_serialization(**kwargs)
-    result = open(archive_name, "rb")
-    export_task.result.save(archive_name.split(os.sep)[-1], File(result))
-    os.remove(archive_name)
-    export_task.finished_date = datetime.datetime.now()
-    export_task.state = "F"
-    export_task.result_info = str(_("Export finished"))
-    export_task.save()
+    with open(archive_name, "rb") as result:
+        export_task.result.save(archive_name.split(os.sep)[-1], File(result))
+        os.remove(archive_name)
+        export_task.finished_date = datetime.datetime.now()
+        export_task.state = "F"
+        export_task.result_info = str(_("Export finished"))
+        export_task.save()
 
 
 def update_towns():
diff --git a/ishtar_common/tests.py b/ishtar_common/tests.py
index bbe5db892..818967c64 100644
--- a/ishtar_common/tests.py
+++ b/ishtar_common/tests.py
@@ -732,17 +732,18 @@ class GenericSerializationTest:
         )
         self.documents = []
         for idx in range(12):
-            self.documents.append(
-                models.Document.objects.create(
-                    title="Test{}".format(idx),
-                    associated_file=SimpleUploadedFile("test.txt", b"no real content"),
-                    image=SimpleUploadedFile(
-                        name="test.png",
-                        content=open(image_path, "rb").read(),
-                        content_type="image/png",
-                    ),
+            with open(image_path, "rb") as img:
+                self.documents.append(
+                    models.Document.objects.create(
+                        title="Test{}".format(idx),
+                        associated_file=SimpleUploadedFile("test.txt", b"no real content"),
+                        image=SimpleUploadedFile(
+                            name="test.png",
+                            content=img.read(),
+                            content_type="image/png",
+                        ),
+                    )
                 )
-            )
 
     def generic_serialization_test(self, serialize, no_test=False, kwargs=None):
         if not kwargs:
@@ -2718,8 +2719,10 @@ class BaseImportTest(TestCase):
         importer_filename = os.path.join(root, "importer-group.zip")
         restore_serialized(importer_filename)
         imp_group = models.ImporterGroup.objects.get(slug="chantier-des-depots")
-        imp_file = open(os.path.join(root, "importer-group.csv"), "rb")
-        imp_media = open(os.path.join(root, "importer-group-media.zip"), "rb")
+        with open(os.path.join(root, "importer-group.csv"), "rb") as imp:
+            imp_file = SimpleUploadedFile(imp.name, imp.read())
+        with open(os.path.join(root, "importer-group-media.zip"), "rb") as imp:
+            imp_media = SimpleUploadedFile(imp.name, imp.read())
         return imp_group, imp_file, imp_media
 
     def create_group_import(self, init=True):
@@ -2727,8 +2730,8 @@ class BaseImportTest(TestCase):
         create_user()
         ishtar_user = models.IshtarUser.objects.all()[0]
         file_dict = {
-            "imported_file": SimpleUploadedFile(imp_file.name, imp_file.read()),
-            "imported_images": SimpleUploadedFile(imp_media.name, imp_media.read())
+            "imported_file": imp_file,
+            "imported_images": imp_media
         }
         post_dict = {
             "importer_type": imp_group.pk,
@@ -2891,13 +2894,12 @@ class ImportTestInterface(BaseImportTest):
 
     def _test_create_import_get_data(self):
         csv_path = os.path.join(LIB_BASE_PATH, "ishtar_common", "tests", "insee-test.csv")
+        with open(csv_path, "rb") as f:
+            imported_file = SimpleUploadedFile(name="insee-test.csv", content=f.read())
         return {
             "name": "Test Name",
             "importer_type": self.importer_type.pk,
-            "imported_file": SimpleUploadedFile(
-                name="insee-test.csv",
-                content=open(csv_path, "rb").read(),
-            ),
+            "imported_file": imported_file,
             "encoding": "utf-8",
             "csv_sep": '|',
             "skip_lines": 1,
@@ -3042,17 +3044,16 @@ class ImportTestInterface(BaseImportTest):
     def test_validation_zip_import_image(self):
         # init
         image_path = os.path.join(LIB_BASE_PATH, "ishtar_common", "tests", "test.png")
+        with open(image_path, "rb") as f:
+            imported_images = SimpleUploadedFile(name="test.png", content=f.read(),
+                                                 content_type="image/png")
         data = {
             "name": "Import Zip Not Valid Must Fail",
             "importer_type": self.importer_type.pk,
             "encoding": "utf-8",
             "csv_sep": "|",
             "skip_lines": 1,
-            "imported_images": SimpleUploadedFile(
-                name="test.png",
-                content=open(image_path, "rb").read(),
-                content_type="image/png",
-            ),
+            "imported_images": imported_images,
         }
 
         # superuser
@@ -3113,9 +3114,15 @@ class ImportTestInterface(BaseImportTest):
         path = os.path.join(
             LIB_BASE_PATH, "ishtar_common", "tests", "error-file.csv"
         )
-        imprt.error_file = SimpleUploadedFile(name="error-file.csv", content=open(path, "rb").read(), content_type="text/csv")
+        with open(path, "rb") as f:
+            error_file = SimpleUploadedFile(name="error-file.csv", content=f.read(),
+                                            content_type="text/csv")
+        imprt.error_file = error_file
         imprt.save()
-        imprt2.error_file = SimpleUploadedFile(name="error-file.csv", content=open(path, "rb").read(), content_type="text/csv")
+        with open(path, "rb") as f:
+            error_file = SimpleUploadedFile(name="error-file.csv", content=f.read(),
+                                            content_type="text/csv")
+        imprt2.error_file = error_file
         imprt2.save()
 
         q = models.ImportLineError.objects.filter(import_item=imprt.pk)
@@ -3261,27 +3268,27 @@ class ImportTest(BaseImportTest):
         SUB_IMPORT_MATCH_IDX = [1, 2]
 
         with tempfile.TemporaryDirectory() as tmpdir:
-            current_zip = zipfile.ZipFile(group_import.archive_file.path, "r")
-            name_list = current_zip.namelist()
-            self.assertIn("content.json", name_list)
-            current_zip.extract("content.json", tmpdir)
-            content_name = os.path.join(tmpdir, "content.json")
-            with open(content_name, "r") as content:
-                files = json.loads(content.read())
-            self.assertIn("imported_file", files.keys())
-            self.assertIn(files["imported_file"], name_list)
-            for idx in range(4):
-                self.assertIn(f"sub-{idx}-result_file", files.keys())
-                self.assertIn(files[f"sub-{idx}-result_file"], name_list)
-            for idx in SUB_IMPORT_MATCH_IDX:
-                self.assertIn(f"sub-{idx}-match_file", files.keys())
-                self.assertIn(files[f"sub-{idx}-match_file"], name_list)
-            for name in name_list:
-                current_zip.extract(name, tmpdir)
-                if name == files["imported_file"]:
-                    with open(os.path.join(tmpdir, name), "r") as f:
-                        result = f.read()
-                        self.assertEqual(result, csv_content)
+            with zipfile.ZipFile(group_import.archive_file.path, "r") as current_zip:
+                name_list = current_zip.namelist()
+                self.assertIn("content.json", name_list)
+                current_zip.extract("content.json", tmpdir)
+                content_name = os.path.join(tmpdir, "content.json")
+                with open(content_name, "r") as content:
+                    files = json.loads(content.read())
+                self.assertIn("imported_file", files.keys())
+                self.assertIn(files["imported_file"], name_list)
+                for idx in range(4):
+                    self.assertIn(f"sub-{idx}-result_file", files.keys())
+                    self.assertIn(files[f"sub-{idx}-result_file"], name_list)
+                for idx in SUB_IMPORT_MATCH_IDX:
+                    self.assertIn(f"sub-{idx}-match_file", files.keys())
+                    self.assertIn(files[f"sub-{idx}-match_file"], name_list)
+                for name in name_list:
+                    current_zip.extract(name, tmpdir)
+                    if name == files["imported_file"]:
+                        with open(os.path.join(tmpdir, name), "r") as f:
+                            result = f.read()
+                            self.assertEqual(result, csv_content)
 
         group_import.unarchive("F")
         group_import = models.ImportGroup.objects.get(pk=group_import.pk)
@@ -4639,14 +4646,13 @@ class StorageTest(TestCase):
         image_path = os.path.join(
             LIB_BASE_PATH, "ishtar_common", "tests", "test.png"
         )
+        with open(image_path, "rb") as f:
+            image = SimpleUploadedFile(name="test.png", content=f.read(),
+                                       content_type="image/png")
         doc = models.Document.objects.create(
             source_type=self.st1,
             title="Operation report",
-            image=SimpleUploadedFile(
-                name="test.png",
-                content=open(image_path, "rb").read(),
-                content_type="image/png",
-            ),
+            image=image,
         )
         p = doc.image.path.split(os.sep)
         # current save path
@@ -4656,25 +4662,17 @@ class StorageTest(TestCase):
             if f.startswith("test"):
                 os.remove(os.path.join(base_path, f))
         doc = models.Document.objects.get(pk=doc.pk)
-        doc.image.save(
-            "test.png",
-            SimpleUploadedFile(
-                name="test.png",
-                content=open(image_path, "rb").read(),
-                content_type="image/png",
-            ),
-        )
+        with open(image_path, "rb") as f:
+            image = SimpleUploadedFile(name="test.png", content=f.read(),
+                                       content_type="image/png")
+        doc.image.save("test.png", image)
         doc = models.Document.objects.get(pk=doc.pk)
         os.remove(doc.image.path)
         os.symlink("/tmp/ZZZZZZZZZZZZZZZ", doc.image.path)  # bad link
-        doc.image.save(
-            "test.png",
-            SimpleUploadedFile(
-                name="test.png",
-                content=open(image_path, "rb").read(),
-                content_type="image/png",
-            ),
-        )
+        with open(image_path, "rb") as f:
+            image = SimpleUploadedFile(name="test.png", content=f.read(),
+                                       content_type="image/png")
+        doc.image.save("test.png", image)
         doc.save()
 
 
@@ -4863,13 +4861,15 @@ class DocumentTest(TestCase):
         pdf_path = os.path.join(
             LIB_BASE_PATH, "ishtar_common", "tests", "simple.pdf"
         )
-        doc = models.Document.objects.create(
-            title="Document",
-            associated_file=SimpleUploadedFile(
+        with open(pdf_path, "rb") as f:
+            associated_file = SimpleUploadedFile(
                 name="simple.pdf",
-                content=open(pdf_path, "rb").read(),
+                content=f.read(),
                 content_type="application/pdf",
             )
+        doc = models.Document.objects.create(
+            title="Document",
+            associated_file=associated_file
         )
         doc.operations.add(self.ope1)
         doc = models.Document.objects.get(id=doc.pk)
diff --git a/ishtar_common/utils.py b/ishtar_common/utils.py
index ca78993c2..10dee40ca 100644
--- a/ishtar_common/utils.py
+++ b/ishtar_common/utils.py
@@ -2249,7 +2249,8 @@ def generate_relation_graph(
     png_name = tempdir + os.path.sep + "relations.png"
 
     with open(png_name, "wb") as png_file:
-        svg2png(open(svg_tmp_name, "rb").read(), write_to=png_file)
+        with open(svg_tmp_name, "rb") as svg_tmp:
+            svg2png(svg_tmp.read(), write_to=png_file)
     with open(png_name, "rb") as png_file:
         django_file = File(png_file)
         attr = "relation_bitmap_image" + suffix
diff --git a/ishtar_common/utils_migrations.py b/ishtar_common/utils_migrations.py
index f11428e3c..5654a8897 100644
--- a/ishtar_common/utils_migrations.py
+++ b/ishtar_common/utils_migrations.py
@@ -28,12 +28,14 @@ def migrate_simple_image_to_m2m(base_model, image_model, rel_model, verbose=Fals
         image_instance = image_model.objects.create()
 
         try:
-            image_instance.image.save(
-                os.path.basename(item.image.path), File(open(item.image.path))
-            )
-            image_instance.thumbnail.save(
-                os.path.basename(item.thumbnail.path), File(open(item.thumbnail.path))
-            )
+            with open(item.image.path) as fle:
+                image_instance.image.save(
+                    os.path.basename(item.image.path), File(fle)
+                )
+            with open(item.thumbnail.path) as fle:
+                image_instance.thumbnail.save(
+                    os.path.basename(item.thumbnail.path), File(fle)
+                )
         except IOError:
             # image not on hard-drive
             item.image = None