Flake8 improvements

Author: Sylvain MARIE

yamlable/__init__.py

@@ -1,3 +1,8 @@
+#  Authors: Sylvain MARIE <sylvain.marie@se.com>
+#            + All contributors to <https://github.com/smarie/python-yamlable>
+#
+#  License: 3-clause BSD, <https://github.com/smarie/python-yamlable/blob/master/LICENSE>
+
 from yamlable.base import AbstractYamlObject, NONE_IGNORE_CHECKS, read_yaml_node_as_dict
 from yamlable.main import YamlCodec, register_yamlable_codec, yaml_info_decorate, yaml_info, YamlAble, \
     AbstractYamlAble, YAMLABLE_PREFIX
@@ -26,13 +31,13 @@
 ]
 
 try:  # python 3.5+
-    from yamlable.base import Y
+    from yamlable.base import Y  # noqa: F401
     __all__.append('Y')
 except ImportError:
     pass
 
 try:  # python 3.5+
-    from yamlable.main import YA
+    from yamlable.main import YA  # noqa: F401
     __all__.append('YA')
 except ImportError:
     pass

yamlable/base.py

@@ -1,3 +1,8 @@
+#  Authors: Sylvain MARIE <sylvain.marie@se.com>
+#            + All contributors to <https://github.com/smarie/python-yamlable>
+#
+#  License: 3-clause BSD, <https://github.com/smarie/python-yamlable/blob/master/LICENSE>
+
 from abc import ABCMeta
 from collections import OrderedDict
 
@@ -32,7 +37,7 @@ def __exit__(self, exception_type, exception_value, traceback):
 try:  # python 3.5.4+
     from typing import Type
 except ImportError:
-    pass # normal for old versions of typing
+    pass  # normal for old versions of typing
 
 
 class AbstractYamlObject(six.with_metaclass(ABCMeta, object)):

yamlable/main.py

@@ -1,10 +1,15 @@
+#  Authors: Sylvain MARIE <sylvain.marie@se.com>
+#            + All contributors to <https://github.com/smarie/python-yamlable>
+#
+#  License: 3-clause BSD, <https://github.com/smarie/python-yamlable/blob/master/LICENSE>
+
 import collections
 from abc import abstractmethod, ABCMeta
 
 import six
 
 try:  # python 3.5+
-    from typing import TypeVar, Callable, Optional, Iterable, Any, Tuple, Mapping, Any, Dict, Set, List
+    from typing import TypeVar, Callable, Iterable, Any, Tuple, Dict, Set, List
     YA = TypeVar('YA', bound='YamlAble')
     T = TypeVar('T')
 except ImportError:
@@ -13,7 +18,7 @@
 try:  # python 3.5.4+
     from typing import Type
 except ImportError:
-    pass # normal for old versions of typing
+    pass  # normal for old versions of typing
 
 from yaml import Loader, SafeLoader, Dumper, SafeDumper, MappingNode
 
@@ -452,8 +457,8 @@ def encode(cls, dumper, obj,
 
         :param dumper:
         :param obj:
-        :param without_custom_tag: if this is set to True, the yaml tag !yamlable/<yaml_tag_suffix> will not be written to
-            the document. Warning: if you do so, decoding the object will not be easy!
+        :param without_custom_tag: if this is set to True, the yaml tag !yamlable/<yaml_tag_suffix> will not be written
+            to the document. Warning: if you do so, decoding the object will not be easy!
         :param kwargs: keyword arguments coming from pyyaml, not sure what you will find here.
         :return:
         """

yamlable/yaml_objects.py

@@ -1,3 +1,8 @@
+#  Authors: Sylvain MARIE <sylvain.marie@se.com>
+#            + All contributors to <https://github.com/smarie/python-yamlable>
+#
+#  License: 3-clause BSD, <https://github.com/smarie/python-yamlable/blob/master/LICENSE>
+
 from abc import ABCMeta
 
 import six
@@ -11,7 +16,7 @@
 try:  # python 3.5.4+
     from typing import Type
 except ImportError:
-    pass # normal for old versions of typing
+    pass  # normal for old versions of typing
 
 from yaml import YAMLObjectMetaclass, YAMLObject, SafeLoader, MappingNode