REFACTOR-modin-project#2059: Fix linting and API testing issues

Signed-off-by: Vasilij Litvinov <[email protected]>

modin/config/__main__.py

@@ -1,3 +1,16 @@
+# Licensed to Modin Development Team under one or more contributor license agreements.
+# See the NOTICE file distributed with this work for additional information regarding
+# copyright ownership.  The Modin Development Team licenses this file to you under the
+# Apache License, Version 2.0 (the "License"); you may not use this file except in
+# compliance with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under
+# the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+# ANY KIND, either express or implied. See the License for the specific language
+# governing permissions and limitations under the License.
+
 from . import *  # noqa: F403, F401
 from .pubsub import Parameter
 
@@ -6,7 +19,7 @@ def print_config_help():
     for objname in sorted(globals()):
         obj = globals()[objname]
         if isinstance(obj, type) and issubclass(obj, Parameter) and not obj.is_abstract:
-            print(f"{obj.get_help()}\n\tCurrent value: {obj.get()}")
+            print(f"{obj.get_help()}\n\tCurrent value: {obj.get()}")  # noqa: T001
 
 
 if __name__ == "__main__":

modin/pandas/__init__.py

@@ -87,7 +87,7 @@
 import os
 import multiprocessing
 
-from modin.config import Engine, Backend, Parameter, CpuCount
+from modin.config import Engine, Parameter
 
 # Set this so that Pandas doesn't try to multithread by itself
 os.environ["OMP_NUM_THREADS"] = "1"
@@ -104,6 +104,7 @@
 
 def _update_engine(publisher: Parameter):
     global DEFAULT_NPARTITIONS, dask_client, num_cpus
+    from modin.config import Backend, CpuCount
 
     if publisher.get() == "Ray":
         import ray
@@ -330,4 +331,4 @@ def init_remote_ray(partition):
     "DEFAULT_NPARTITIONS",
 ]
 
-del pandas
+del pandas, Engine, Parameter