diff --git a/integrationtests/test.py b/integrationtests/test.py
index efff64305bbc9dd24ebf7817fb9d10d0523c9f5b..2d8818005ee4350bd3b1403ae71c315c6d5c1a14 100755
--- a/integrationtests/test.py
+++ b/integrationtests/test.py
@@ -28,6 +28,7 @@
 module description
 """
 
+import os
 from caosdb import EmptyUniqueQueryError
 import argparse
 import sys
@@ -42,7 +43,6 @@ import yaml
 from caosadvancedtools.testutils import clear_database, set_test_key
 set_test_key("10b128cf8a1372f30aa3697466bb55e76974e0c16a599bb44ace88f19c8f61e2")
 
-import os
 
 def rfp(*pathcomponents):
     """
@@ -52,14 +52,12 @@ def rfp(*pathcomponents):
     return os.path.join(os.path.dirname(__file__), *pathcomponents)
 
 
-
-
 @pytest.fixture
 def usemodel():
     model = parse_model_from_yaml(rfp("model.yml"))
     model.sync_data_model(noquestion=True, verbose=False)
 
-    
+
 @pytest.fixture
 def ident():
     ident = CaosDBIdentifiableAdapter()
@@ -68,12 +66,12 @@ def ident():
     ident.register_identifiable(
         "Person", db.RecordType()
         .add_parent(name="Person")
-        #.add_property(name="first_name")
+        # .add_property(name="first_name")
         .add_property(name="last_name"))
     ident.register_identifiable(
         "Measurement", db.RecordType()
         .add_parent(name="Measurement")
-        #.add_property(name="identifier")
+        # .add_property(name="identifier")
         .add_property(name="date")
         .add_property(name="project"))
     ident.register_identifiable(
@@ -150,6 +148,7 @@ def test_multiple_insertions(clear_database, usemodel, ident, crawler):
     assert len(ins) == 0
     assert len(ups) == 0
 
+
 def test_insertion(clear_database, usemodel, ident, crawler):
     ins, ups = crawler.synchronize()
 
@@ -169,6 +168,7 @@ def test_insertion(clear_database, usemodel, ident, crawler):
     assert len(ins) == 0
     assert len(ups) == 0
 
+
 def test_insertion_and_update(clear_database, usemodel, ident, crawler):
     ins, ups = crawler.synchronize()
 
@@ -184,7 +184,8 @@ def test_insertion_and_update(clear_database, usemodel, ident, crawler):
     ins, ups = cr.synchronize()
     assert len(ins) == 0
     assert len(ups) == 1
-    
+
+
 def test_identifiable_update(clear_database, usemodel, ident, crawler):
     ins, ups = crawler.synchronize()
 
@@ -197,7 +198,7 @@ def test_identifiable_update(clear_database, usemodel, ident, crawler):
     l = cr.updateList
     for record in l:
         if (record.parents[0].name == "Measurement" and
-            record.get_property("date").value == "2020-01-03"):
+                record.get_property("date").value == "2020-01-03"):
             # maybe a bit weird, but add an email address to a measurement
             record.add_property(name="email", value="testperson@testaccount.test")
             print("one change")
@@ -206,14 +207,13 @@ def test_identifiable_update(clear_database, usemodel, ident, crawler):
     assert len(ins) == 0
     assert len(ups) == 1
 
-    
     # Test the change within one property:
     cr = Crawler(debug=True, identifiableAdapter=ident)
     crawl_standard_test_directory(cr)
     l = cr.updateList
     for record in l:
         if (record.parents[0].name == "Measurement" and
-            record.get_property("date").value == "2020-01-03"):
+                record.get_property("date").value == "2020-01-03"):
             record.add_property(name="email", value="testperson@coolmail.test")
             print("one change")
             break
@@ -227,7 +227,7 @@ def test_identifiable_update(clear_database, usemodel, ident, crawler):
     l = cr.updateList
     for record in l:
         if (record.parents[0].name == "Measurement" and
-            record.get_property("date").value == "2020-01-03"):
+                record.get_property("date").value == "2020-01-03"):
             record.add_property(name="email", value="testperson@coolmail.test")
             record.get_property("date").value = "2012-01-02"
             print("one change")
@@ -269,6 +269,7 @@ def test_file_insertion(clear_database, usemodel, ident, crawler_extended):
         assert len(r) == 1
         assert r[0].get_property("ReadmeFile").value == f.id
 
+
 def test_file_update(clear_database, usemodel, ident, crawler_extended):
     ins1, ups1 = crawler_extended.synchronize(commit_changes=True)
     fileList_ins = [r for r in ins1 if r.role == "File"]
@@ -288,7 +289,7 @@ def test_file_update(clear_database, usemodel, ident, crawler_extended):
     res = db.execute_query("Find File")
     assert len(res) == 11
     assert len(res[0].parents) == 0
-    
+
     cr2 = Crawler(debug=True, identifiableAdapter=ident)
     crawl_standard_test_directory(cr2, cfood="scifolder_extended2.yml")
 
@@ -302,7 +303,6 @@ def test_file_update(clear_database, usemodel, ident, crawler_extended):
     res = db.execute_query("Find File")
     assert len(res) == 11
     assert res[0].parents[0].name == "ProjectMarkdownReadme"
-    
 
     # TODO: Implement file update checks (based on checksum)
     # Add test with actual file update:
diff --git a/src/doc/conf.py b/src/doc/conf.py
index 75731285a77f8a30fcb4bfc6be0483c4bba0052a..825f878b2d52947978e2163b5bcff327e5da009d 100644
--- a/src/doc/conf.py
+++ b/src/doc/conf.py
@@ -3,7 +3,7 @@
 # Configuration file for the Sphinx documentation builder.
 #
 # Based on the configuration for caosdb-pylib.
-# 
+#
 # # Copyright (C) 2021 Alexander Schlemmer <alexander.schlemmer@ds.mpg.de>
 #
 # This file only contains a selection of the most common options. For a full
diff --git a/src/newcrawler/identified_cache.py b/src/newcrawler/identified_cache.py
index cba00dd2bfff8a0f886878f532133bb18b1a20de..0b9d7a47bdecc4094edb1296f4c04dfa083a2436 100644
--- a/src/newcrawler/identified_cache.py
+++ b/src/newcrawler/identified_cache.py
@@ -66,7 +66,6 @@ def _create_hashable_string(identifiable: db.Record):
                 else:
                     tmplist.append(val)
             value = str(tmplist)
-        
 
         rec_string += "{}:".format(pname) + value
     return rec_string
diff --git a/unittests/test_converters.py b/unittests/test_converters.py
index fcc89f2e1467f23accfe47bd52a51d934ccecf91..166f7d516687b5e2d8e8e60321de5084b38e060a 100644
--- a/unittests/test_converters.py
+++ b/unittests/test_converters.py
@@ -177,7 +177,8 @@ def test_json_converter(converter_registry):
     test_json = File("testjson.json", rfp(
         "test_directories", "examples_json", "testjson.json"))
 
-    schema_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), "test_directories", "examples_json", "testjson.schema.json")
+    schema_path = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                               "test_directories", "examples_json", "testjson.schema.json")
     jsonconverter = JSONFileConverter(
         definition={"match": "(.*)", "validate": schema_path},
         name="TestJSONFileConverter",
@@ -228,7 +229,7 @@ def test_json_converter(converter_registry):
     broken_json = File("brokenjson.json", rfp(
         "test_directories", "examples_json", "brokenjson.json"))
     m = jsonconverter.match(broken_json)
-    
+
     # Doesn't validate because of missing required 'name' property
     with pytest.raises(ConverterValidationError) as err:
         children = jsonconverter.create_children(None, broken_json)
diff --git a/unittests/test_entity_comparison.py b/unittests/test_entity_comparison.py
index 1e22280d893ae7bba301baa61213b5e49eaaba6c..750828bbd00a7142040c95a532246adbc97ca630 100644
--- a/unittests/test_entity_comparison.py
+++ b/unittests/test_entity_comparison.py
@@ -13,13 +13,13 @@ from newcrawler.crawl import check_identical
 def test_compare_entities():
     record1 = db.Record()
     record2 = db.Record()
-    
+
     assert check_identical(record1, record2)
 
     record1.add_property(name="type", value="int")
     assert not check_identical(record1, record2)
     assert not check_identical(record2, record1)
-    
+
     record2.add_property(name="type", value="int")
     assert check_identical(record1, record2)
     record2.get_property("type").value = "int2"
@@ -79,7 +79,8 @@ def test_compare_entities():
     for attribute, values in zip(("_checksum", "_size"),
                                  (vals[0], vals[1])):
         setattr(record1, attribute, values[0])
-        assert not check_identical(record1, record2)  # not identical, because record1 sets the datatype
+        # not identical, because record1 sets the datatype
+        assert not check_identical(record1, record2)
         assert check_identical(record2, record1)  # identical, because record2 sets the datatype
 
         setattr(record2, attribute, values[1])
@@ -89,5 +90,3 @@ def test_compare_entities():
         setattr(record2, attribute, values[0])
         assert check_identical(record1, record2)
         assert check_identical(record2, record1)
-
-    
diff --git a/unittests/test_file_identifiables.py b/unittests/test_file_identifiables.py
index 234fae20c53e137bf049e496dbe178a30e5de833..ae5c536a8d55ba345f2708625d04fce3a5fff5c2 100644
--- a/unittests/test_file_identifiables.py
+++ b/unittests/test_file_identifiables.py
@@ -71,5 +71,3 @@ def test_file_identifiable():
     with raises(RuntimeError, match=".*unambigiously.*"):
         records.append(test_record_alsocorrect_path)
         identified_file = ident.get_file(file_obj)
-    
-    
diff --git a/unittests/test_schema.py b/unittests/test_schema.py
index cac37c758aa838d78eb24435db55b099258900ac..4af29e28782a29360ecc10f342ae2e09ea7ce88a 100644
--- a/unittests/test_schema.py
+++ b/unittests/test_schema.py
@@ -13,6 +13,7 @@ from pytest import raises
 
 from jsonschema.exceptions import ValidationError
 
+
 def rfp(*pathcomponents):
     """
     Return full path.
diff --git a/unittests/test_tool_extended.py b/unittests/test_tool_extended.py
index 2361e99373042a5f5ce73b8eb98083f7431d4836..d9f37064589a9d40e2e1e5be8952c430f058b65e 100644
--- a/unittests/test_tool_extended.py
+++ b/unittests/test_tool_extended.py
@@ -47,7 +47,7 @@ def crawler():
 # def ident(crawler):
 #     ident = LocalStorageIdentifiableAdapter()
 #     crawler.identifiableAdapter = ident
-    
+
 #     ident.restore_state(rfp("records.xml"))
 
 #     ident.register_identifiable(