diff --git a/README.md b/README.md
index 56242e8..1837e60 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
-<p align="center"><img src="https://github.com/gnuradio/SigMF/blob/sigmf-v1.x/logo/sigmf_logo.svg" alt="Rendered SigMF Logo"/></p>
+<p align="center"><img src="https://github.com/sigmf/SigMF/blob/v1.2.0/logo/sigmf_logo.png" alt="Rendered SigMF Logo"/></p>
 
 This python module makes it easy to interact with Signal Metadata Format
 (SigMF) recordings. This module works with Python 3.7+ and is distributed
 freely under the terms GNU Lesser GPL v3 License.
 
 The [SigMF specification document](https://github.com/sigmf/SigMF/blob/HEAD/sigmf-spec.md)
-is located in the [SigMF](https://github.com/gnuradio/SigMF) repository.
+is located in the [SigMF](https://github.com/sigmf/SigMF) repository.
 
 # Installation
 
diff --git a/pyproject.toml b/pyproject.toml
index ee425f7..15422cf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "SigMF"
 description = "Easily interact with Signal Metadata Format (SigMF) recordings."
-keywords = ["gnuradio"]
+keywords = ["gnuradio", "radio"]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)",
@@ -13,6 +13,8 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering",
+    "Topic :: Communications :: Ham Radio",
 ]
 dynamic = ["version", "readme"]
 requires-python = ">=3.7"
diff --git a/sigmf/__init__.py b/sigmf/__init__.py
index e11844a..38eed7b 100644
--- a/sigmf/__init__.py
+++ b/sigmf/__init__.py
@@ -1,19 +1,22 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
-__version__ = "1.2.0"
+# version of this python module
+__version__ = "1.2.1"
+# matching version of the SigMF specification
+__specification__ = "1.2.0"
 
 from .archive import SigMFArchive
 from .sigmffile import SigMFFile, SigMFCollection
 from .archivereader import SigMFArchiveReader
 
 from . import archive
+from . import archivereader
 from . import error
 from . import schema
 from . import sigmffile
-from . import validate
 from . import utils
-from . import archivereader
+from . import validate
diff --git a/sigmf/apps/convert_wav.py b/sigmf/apps/convert_wav.py
index 638bd46..9151d2f 100755
--- a/sigmf/apps/convert_wav.py
+++ b/sigmf/apps/convert_wav.py
@@ -1,29 +1,35 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 """converter for wav containers"""
 
-import os
-import tempfile
-import datetime
-import pathlib
 import argparse
+import datetime
 import getpass
+import logging
+import os
+import pathlib
+import tempfile
 
 from scipy.io import wavfile
 
+from .. import SigMFFile, __specification__
+from .. import __version__ as toolversion
 from .. import archive
-from ..sigmffile import SigMFFile
 from ..utils import get_data_type_str
 
+log = logging.getLogger()
+
 
 def convert_wav(input_wav_filename, archive_filename=None, start_datetime=None, author=None):
     """
     read a .wav and write a .sigmf archive
     """
+    input_path = pathlib.Path(input_wav_filename)
+    input_stem = input_path.stem
     samp_rate, wav_data = wavfile.read(input_wav_filename)
 
     global_info = {
@@ -33,11 +39,11 @@ def convert_wav(input_wav_filename, archive_filename=None, start_datetime=None,
         SigMFFile.NUM_CHANNELS_KEY: 1 if len(wav_data.shape) < 2 else wav_data.shape[1],
         SigMFFile.RECORDER_KEY: os.path.basename(__file__),
         SigMFFile.SAMPLE_RATE_KEY: samp_rate,
+        SigMFFile.VERSION_KEY: __specification__,
     }
 
     if start_datetime is None:
-        fname = pathlib.Path(input_wav_filename)
-        mtime = datetime.datetime.fromtimestamp(fname.stat().st_mtime)
+        mtime = datetime.datetime.fromtimestamp(input_path.stat().st_mtime)
         start_datetime = mtime.isoformat() + "Z"
 
     capture_info = {SigMFFile.START_INDEX_KEY: 0}
@@ -45,7 +51,7 @@ def convert_wav(input_wav_filename, archive_filename=None, start_datetime=None,
         capture_info[SigMFFile.DATETIME_KEY] = start_datetime
 
     tmpdir = tempfile.mkdtemp()
-    sigmf_data_filename = input_wav_filename + archive.SIGMF_DATASET_EXT
+    sigmf_data_filename = input_stem + archive.SIGMF_DATASET_EXT
     sigmf_data_path = os.path.join(tmpdir, sigmf_data_filename)
     wav_data.tofile(sigmf_data_path)
 
@@ -53,7 +59,7 @@ def convert_wav(input_wav_filename, archive_filename=None, start_datetime=None,
     meta.add_capture(0, metadata=capture_info)
 
     if archive_filename is None:
-        archive_filename = os.path.basename(input_wav_filename) + archive.SIGMF_ARCHIVE_EXT
+        archive_filename = input_stem + archive.SIGMF_ARCHIVE_EXT
     meta.tofile(archive_filename, toarchive=True)
     return os.path.abspath(archive_filename)
 
@@ -65,13 +71,22 @@ def main():
     parser = argparse.ArgumentParser(description="Convert .wav to .sigmf container.")
     parser.add_argument("input", type=str, help="Wavfile path")
     parser.add_argument("--author", type=str, default=None, help=f"set {SigMFFile.AUTHOR_KEY} metadata")
+    parser.add_argument('-v', '--verbose', action='count', default=0)
+    parser.add_argument('--version', action='version', version=f'%(prog)s v{toolversion}')
     args = parser.parse_args()
 
+    level_lut = {
+        0: logging.WARNING,
+        1: logging.INFO,
+        2: logging.DEBUG,
+    }
+    logging.basicConfig(level=level_lut[min(args.verbose, 2)])
+
     out_fname = convert_wav(
         input_wav_filename=args.input,
         author=args.author,
     )
-    print("Wrote", out_fname)
+    log.info(f"Write {out_fname}")
 
 
 if __name__ == "__main__":
diff --git a/sigmf/apps/gui.py b/sigmf/apps/gui.py
index ac51da3..9beda03 100644
--- a/sigmf/apps/gui.py
+++ b/sigmf/apps/gui.py
@@ -1,17 +1,20 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 '''GUI for creating & editing SigMF Files'''
 
-import os
+import argparse
 import logging
+import os
+
 from PySimpleGUI import *
 
-from ..sigmffile import SigMFFile, fromarchive, dtype_info
+from .. import __version__ as toolversion
 from ..archive import SIGMF_ARCHIVE_EXT
+from ..sigmffile import SigMFFile, dtype_info, fromarchive
 
 log = logging.getLogger()
 
@@ -381,13 +384,10 @@ def add_capture(capture_data_input, values, capture_selector_dict, file_data, fr
 
 
 def main():
-    import argparse
-    from sigmf import __version__ as toolversion
-
     parser = argparse.ArgumentParser(description='Edit SigMF Archive.')
     parser.add_argument('-i', '--input', help='Input SigMF Archive Path.', default=None)
     parser.add_argument('-v', '--verbose', action='count', default=0)
-    parser.add_argument('--version', action='version', version=f'%(prog)s {toolversion}')
+    parser.add_argument('--version', action='version', version=f'%(prog)s v{toolversion}')
     args = parser.parse_args()
 
     level_lut = {
@@ -638,3 +638,6 @@ def main():
             break
 
     window.Close()
+
+if __name__ == "__main__":
+    main()
diff --git a/sigmf/archive.py b/sigmf/archive.py
index de6bd50..897c0ee 100644
--- a/sigmf/archive.py
+++ b/sigmf/archive.py
@@ -1,6 +1,6 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
@@ -13,7 +13,6 @@
 
 from .error import SigMFFileError
 
-
 SIGMF_ARCHIVE_EXT = ".sigmf"
 SIGMF_METADATA_EXT = ".sigmf-meta"
 SIGMF_DATASET_EXT = ".sigmf-data"
diff --git a/sigmf/archivereader.py b/sigmf/archivereader.py
index 5759b74..556e84d 100644
--- a/sigmf/archivereader.py
+++ b/sigmf/archivereader.py
@@ -1,6 +1,6 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/gnuradio/SigMF
+# This file is part of sigmf-python. https://github.com/sigmf/SigMF
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
@@ -11,11 +11,11 @@
 import tarfile
 import tempfile
 
-from . import __version__  #, schema, sigmf_hash, validate
+from . import __version__
+from .archive import SIGMF_ARCHIVE_EXT, SIGMF_DATASET_EXT, SIGMF_METADATA_EXT, SigMFArchive
+from .error import SigMFFileError
 from .sigmffile import SigMFFile
-from .archive import SigMFArchive, SIGMF_DATASET_EXT, SIGMF_METADATA_EXT, SIGMF_ARCHIVE_EXT
 from .utils import dict_merge
-from .error import SigMFFileError
 
 
 class SigMFArchiveReader():
diff --git a/sigmf/error.py b/sigmf/error.py
index df4e2ae..92ac194 100644
--- a/sigmf/error.py
+++ b/sigmf/error.py
@@ -1,6 +1,6 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
diff --git a/sigmf/schema-collection.json b/sigmf/schema-collection.json
index b4540b5..96b28f3 100644
--- a/sigmf/schema-collection.json
+++ b/sigmf/schema-collection.json
@@ -1,5 +1,5 @@
 {
-    "$id": "https://github.com/gnuradio/SigMF",
+    "$id": "https://github.com/sigmf/SigMF",
     "$schema": "http://json-schema.org/draft-07/schema",
     "default": {},
     "required": [
@@ -20,7 +20,7 @@
                     "$id": "#/properties/collection/properties/core%3Aversion",
                     "description": "The version of the SigMF specification used to create the Collection file.",
                     "examples": [
-                        "1.0.0"
+                        "1.2.0"
                     ],
                     "type": "string"
                 },
diff --git a/sigmf/schema-meta.json b/sigmf/schema-meta.json
index c3b7ad9..9e83cf3 100644
--- a/sigmf/schema-meta.json
+++ b/sigmf/schema-meta.json
@@ -1,5 +1,5 @@
 {
-    "$id": "https://github.com/gnuradio/SigMF",
+    "$id": "https://github.com/sigmf/SigMF",
     "$schema": "http://json-schema.org/draft-07/schema",
     "default": [
         "global",
diff --git a/sigmf/schema.py b/sigmf/schema.py
index a1ca14f..a34c5d2 100644
--- a/sigmf/schema.py
+++ b/sigmf/schema.py
@@ -1,13 +1,13 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 '''Schema IO'''
 
-import os
 import json
+import os
 
 from . import utils
 
diff --git a/sigmf/sigmf_hash.py b/sigmf/sigmf_hash.py
index 5f07768..414dc36 100644
--- a/sigmf/sigmf_hash.py
+++ b/sigmf/sigmf_hash.py
@@ -1,6 +1,6 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
diff --git a/sigmf/sigmffile.py b/sigmf/sigmffile.py
index 91a31b7..098d65d 100644
--- a/sigmf/sigmffile.py
+++ b/sigmf/sigmffile.py
@@ -1,24 +1,26 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 '''SigMFFile Object'''
 
-from collections import OrderedDict
 import codecs
 import json
 import tarfile
 import tempfile
-from os import path
 import warnings
+from collections import OrderedDict
+from os import path
+
 import numpy as np
 
-from . import __version__, schema, sigmf_hash, validate
-from .archive import SigMFArchive, SIGMF_DATASET_EXT, SIGMF_METADATA_EXT, SIGMF_ARCHIVE_EXT, SIGMF_COLLECTION_EXT
+from . import __specification__, __version__, schema, sigmf_hash, validate
+from .archive import SIGMF_ARCHIVE_EXT, SIGMF_COLLECTION_EXT, SIGMF_DATASET_EXT, SIGMF_METADATA_EXT, SigMFArchive
+from .error import SigMFAccessError, SigMFFileError
 from .utils import dict_merge
-from .error import SigMFFileError, SigMFAccessError
+
 
 class SigMFMetafile():
     VALID_KEYS = {}
@@ -174,7 +176,7 @@ def __init__(self, metadata=None, data_file=None, global_info=None, skip_checksu
         if metadata is None:
             self._metadata = {self.GLOBAL_KEY:{}, self.CAPTURE_KEY:[], self.ANNOTATION_KEY:[]}
             self._metadata[self.GLOBAL_KEY][self.NUM_CHANNELS_KEY] = 1
-            self._metadata[self.GLOBAL_KEY][self.VERSION_KEY] = "1.0.0"
+            self._metadata[self.GLOBAL_KEY][self.VERSION_KEY] = __specification__
         elif isinstance(metadata, dict):
             self._metadata = metadata
         else:
diff --git a/sigmf/utils.py b/sigmf/utils.py
index 18c7cf8..2e61b42 100644
--- a/sigmf/utils.py
+++ b/sigmf/utils.py
@@ -1,16 +1,17 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 """Utilities"""
 
+import re
+import sys
 from copy import deepcopy
 from datetime import datetime
-import sys
+
 import numpy as np
-import re
 
 from . import error
 
diff --git a/sigmf/validate.py b/sigmf/validate.py
index ce18fcc..95f8900 100644
--- a/sigmf/validate.py
+++ b/sigmf/validate.py
@@ -1,14 +1,19 @@
 # Copyright: Multiple Authors
 #
-# This file is part of SigMF. https://github.com/sigmf/sigmf-python
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 '''SigMF Validator'''
 
+import argparse
+import json
+import logging
+
 import jsonschema
 
-from . import schema
+from . import __version__ as toolversion
+from . import error, schema, sigmffile
 
 
 def extend_with_default(validator_class):
@@ -80,15 +85,6 @@ def validate(metadata, ref_schema=schema.get_schema()):
 
 
 def main():
-    import argparse
-    import logging
-    import json
-
-    from . import sigmffile
-    from . import error
-
-    from sigmf import __version__ as toolversion
-
     parser = argparse.ArgumentParser(description='Validate SigMF Archive or file pair against JSON schema.',
                                      prog='sigmf_validate')
     parser.add_argument('filename', help='SigMF path (extension optional).')
diff --git a/tests/conftest.py b/tests/conftest.py
index f8f6aa4..0e46aaf 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,27 +1,16 @@
-# Copyright 2017 GNU Radio Foundation
+# Copyright: Multiple Authors
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+"""Provides pytest fixtures for other tests."""
 
 import tempfile
 
 import pytest
 
+from sigmf import __specification__
 from sigmf.sigmffile import SigMFFile
 
 from .testdata import TEST_FLOAT32_DATA, TEST_METADATA
@@ -38,11 +27,11 @@ def test_data_file():
 @pytest.fixture
 def test_sigmffile(test_data_file):
     """If pytest uses this signature, will return valid SigMF file."""
-    sigf = SigMFFile()
-    sigf.set_global_field("core:datatype", "rf32_le")
-    sigf.set_global_field("core:version", "1.0.0")
-    sigf.add_annotation(start_index=0, length=len(TEST_FLOAT32_DATA))
-    sigf.add_capture(start_index=0)
-    sigf.set_data_file(test_data_file.name)
-    assert sigf._metadata == TEST_METADATA
-    return sigf
+    meta = SigMFFile()
+    meta.set_global_field("core:datatype", "rf32_le")
+    meta.set_global_field("core:version", __specification__)
+    meta.add_annotation(start_index=0, length=len(TEST_FLOAT32_DATA))
+    meta.add_capture(start_index=0)
+    meta.set_data_file(test_data_file.name)
+    assert meta._metadata == TEST_METADATA
+    return meta
diff --git a/tests/test_archive.py b/tests/test_archive.py
index 5c3d67b..eccb1b4 100644
--- a/tests/test_archive.py
+++ b/tests/test_archive.py
@@ -1,12 +1,20 @@
+# Copyright: Multiple Authors
+#
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+"""Tests for SigMFArchive"""
+
 import codecs
 import json
 import tarfile
 import tempfile
 from os import path
 
+import jsonschema
 import numpy as np
 import pytest
-import jsonschema
 
 from sigmf import error
 from sigmf.archive import SIGMF_DATASET_EXT, SIGMF_METADATA_EXT
@@ -75,7 +83,7 @@ def test_unwritable_fileobj_throws_fileerror(test_sigmffile):
 def test_unwritable_name_throws_fileerror(test_sigmffile):
     # Cannot assume /root/ is unwritable (e.g. Docker environment)
     # so use invalid filename
-    unwritable_file = '/bad_name/'
+    unwritable_file = "/bad_name/"
     with pytest.raises(error.SigMFFileError):
         test_sigmffile.archive(name=unwritable_file)
 
diff --git a/tests/test_archivereader.py b/tests/test_archivereader.py
index 1818285..a6053f5 100644
--- a/tests/test_archivereader.py
+++ b/tests/test_archivereader.py
@@ -1,10 +1,17 @@
-# Copyright 2023 GNU Radio Foundation
+# Copyright: Multiple Authors
+#
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+"""Tests for SigMFArchiveReader"""
+
 import tempfile
-import numpy as np
 import unittest
 
-import sigmf
-from sigmf import SigMFFile, SigMFArchiveReader
+import numpy as np
+
+from sigmf import SigMFArchiveReader, SigMFFile, __specification__
 
 
 class TestArchiveReader(unittest.TestCase):
@@ -42,7 +49,7 @@ def test_access_data_without_untar(self):
                         global_info={
                             SigMFFile.DATATYPE_KEY: f"{complex_prefix}{key}_le",
                             SigMFFile.NUM_CHANNELS_KEY: num_channels,
-                            SigMFFile.VERSION_KEY: "1.0.0",
+                            SigMFFile.VERSION_KEY: __specification__,
                         },
                     )
                     temp_meta.tofile(temp_archive, toarchive=True)
diff --git a/tests/test_sigmffile.py b/tests/test_sigmffile.py
index 55672a3..54c3be6 100644
--- a/tests/test_sigmffile.py
+++ b/tests/test_sigmffile.py
@@ -1,31 +1,20 @@
-# Copyright 2017 GNU Radio Foundation
+# Copyright: Multiple Authors
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+"""Tests for SigMFFile Object"""
 
+import copy
+import json
 import os
 import shutil
 import tempfile
-import json
+import unittest
 from pathlib import Path
+
 import numpy as np
-import unittest
-import copy
 
 from sigmf import sigmffile, utils
 from sigmf.sigmffile import SigMFFile
@@ -62,8 +51,8 @@ def test_iterator_basic(self):
             count += 1
         self.assertEqual(count, len(self.sigmf_object))
 
-class TestAnnotationHandling(unittest.TestCase):
 
+class TestAnnotationHandling(unittest.TestCase):
     def test_get_annotations_with_index(self):
         """Test that only annotations containing index are returned from get_annotations()"""
         smf = SigMFFile(copy.deepcopy(TEST_METADATA))
@@ -77,7 +66,7 @@ def test_get_annotations_with_index(self):
                 {SigMFFile.START_INDEX_KEY: 1},
             ]
         )
-    
+
     def test__count_samples_from_annotation(self):
         """Make sure sample count from annotations use correct end index"""
         smf = SigMFFile(copy.deepcopy(TEST_METADATA))
@@ -85,7 +74,7 @@ def test__count_samples_from_annotation(self):
         smf.add_annotation(start_index=4, length=4)
         sample_count = smf._count_samples()
         self.assertEqual(sample_count, 32)
-    
+
     def test_set_data_file_without_annotations(self):
         """
         Make sure setting data_file with no annotations registered does not
@@ -98,7 +87,7 @@ def test_set_data_file_without_annotations(self):
             TEST_FLOAT32_DATA.tofile(temp_path_data)
             smf.set_data_file(temp_path_data)
             samples = smf.read_samples()
-            self.assertTrue(len(samples)==16)
+            self.assertTrue(len(samples) == 16)
 
     def test_set_data_file_with_annotations(self):
         """
@@ -115,7 +104,8 @@ def test_set_data_file_with_annotations(self):
                 # Issues warning since file ends before the final annotatio
                 smf.set_data_file(temp_path_data)
                 samples = smf.read_samples()
-                self.assertTrue(len(samples)==16)
+                self.assertTrue(len(samples) == 16)
+
 
 def simulate_capture(sigmf_md, n, capture_len):
     start_index = capture_len * n
@@ -129,9 +119,7 @@ def simulate_capture(sigmf_md, n, capture_len):
         "core:longitude": -105.0 + 0.0001 * n,
     }
 
-    sigmf_md.add_annotation(start_index=start_index,
-                            length=capture_len,
-                            metadata=annotation_md)
+    sigmf_md.add_annotation(start_index=start_index, length=capture_len, metadata=annotation_md)
 
 
 def test_default_constructor():
@@ -140,7 +128,7 @@ def test_default_constructor():
 
 def test_set_non_required_global_field():
     sigf = SigMFFile()
-    sigf.set_global_field('this_is:not_in_the_schema', None)
+    sigf.set_global_field("this_is:not_in_the_schema", None)
 
 
 def test_add_capture():
@@ -237,89 +225,95 @@ def test_multichannel_seek(self):
 
 
 def test_key_validity():
-    '''assure the keys in test metadata are valid'''
+    """assure the keys in test metadata are valid"""
     for top_key, top_val in TEST_METADATA.items():
         if type(top_val) is dict:
             for core_key in top_val.keys():
-                assert core_key in vars(SigMFFile)[f'VALID_{top_key.upper()}_KEYS']
+                assert core_key in vars(SigMFFile)[f"VALID_{top_key.upper()}_KEYS"]
         elif type(top_val) is list:
             # annotations are in a list
             for annot in top_val:
                 for core_key in annot.keys():
                     assert core_key in SigMFFile.VALID_ANNOTATION_KEYS
         else:
-            raise ValueError('expected list or dict')
+            raise ValueError("expected list or dict")
 
 
 def test_ordered_metadata():
-    '''check to make sure the metadata is sorted as expected'''
+    """check to make sure the metadata is sorted as expected"""
     sigf = SigMFFile()
-    top_sort_order = ['global', 'captures', 'annotations']
+    top_sort_order = ["global", "captures", "annotations"]
     for kdx, key in enumerate(sigf.ordered_metadata()):
         assert kdx == top_sort_order.index(key)
 
 
 def test_captures_checking():
-    '''
+    """
     these tests make sure the various captures access tools work properly
-    '''
-    np.array(TEST_U8_DATA0, dtype=np.uint8).tofile('/tmp/d0.sigmf-data')
-    with open('/tmp/d0.sigmf-meta','w') as f0: json.dump(TEST_U8_META0, f0)
-    np.array(TEST_U8_DATA1, dtype=np.uint8).tofile('/tmp/d1.sigmf-data')
-    with open('/tmp/d1.sigmf-meta','w') as f1: json.dump(TEST_U8_META1, f1)
-    np.array(TEST_U8_DATA2, dtype=np.uint8).tofile('/tmp/d2.sigmf-data')
-    with open('/tmp/d2.sigmf-meta','w') as f2: json.dump(TEST_U8_META2, f2)
-    np.array(TEST_U8_DATA3, dtype=np.uint8).tofile('/tmp/d3.sigmf-data')
-    with open('/tmp/d3.sigmf-meta','w') as f3: json.dump(TEST_U8_META3, f3)
-    np.array(TEST_U8_DATA4, dtype=np.uint8).tofile('/tmp/d4.sigmf-data')
-    with open('/tmp/d4.sigmf-meta','w') as f4: json.dump(TEST_U8_META4, f4)
-
-    sigmf0 = sigmffile.fromfile('/tmp/d0.sigmf-meta', skip_checksum=True)
-    sigmf1 = sigmffile.fromfile('/tmp/d1.sigmf-meta', skip_checksum=True)
-    sigmf2 = sigmffile.fromfile('/tmp/d2.sigmf-meta', skip_checksum=True)
-    sigmf3 = sigmffile.fromfile('/tmp/d3.sigmf-meta', skip_checksum=True)
-    sigmf4 = sigmffile.fromfile('/tmp/d4.sigmf-meta', skip_checksum=True)
+    """
+    np.array(TEST_U8_DATA0, dtype=np.uint8).tofile("/tmp/d0.sigmf-data")
+    with open("/tmp/d0.sigmf-meta", "w") as f0:
+        json.dump(TEST_U8_META0, f0)
+    np.array(TEST_U8_DATA1, dtype=np.uint8).tofile("/tmp/d1.sigmf-data")
+    with open("/tmp/d1.sigmf-meta", "w") as f1:
+        json.dump(TEST_U8_META1, f1)
+    np.array(TEST_U8_DATA2, dtype=np.uint8).tofile("/tmp/d2.sigmf-data")
+    with open("/tmp/d2.sigmf-meta", "w") as f2:
+        json.dump(TEST_U8_META2, f2)
+    np.array(TEST_U8_DATA3, dtype=np.uint8).tofile("/tmp/d3.sigmf-data")
+    with open("/tmp/d3.sigmf-meta", "w") as f3:
+        json.dump(TEST_U8_META3, f3)
+    np.array(TEST_U8_DATA4, dtype=np.uint8).tofile("/tmp/d4.sigmf-data")
+    with open("/tmp/d4.sigmf-meta", "w") as f4:
+        json.dump(TEST_U8_META4, f4)
+
+    sigmf0 = sigmffile.fromfile("/tmp/d0.sigmf-meta", skip_checksum=True)
+    sigmf1 = sigmffile.fromfile("/tmp/d1.sigmf-meta", skip_checksum=True)
+    sigmf2 = sigmffile.fromfile("/tmp/d2.sigmf-meta", skip_checksum=True)
+    sigmf3 = sigmffile.fromfile("/tmp/d3.sigmf-meta", skip_checksum=True)
+    sigmf4 = sigmffile.fromfile("/tmp/d4.sigmf-meta", skip_checksum=True)
 
     assert sigmf0._count_samples() == 256
     assert sigmf0._is_conforming_dataset()
-    assert (0,0) == sigmf0.get_capture_byte_boundarys(0)
-    assert (0,256) == sigmf0.get_capture_byte_boundarys(1)
+    assert (0, 0) == sigmf0.get_capture_byte_boundarys(0)
+    assert (0, 256) == sigmf0.get_capture_byte_boundarys(1)
     assert np.array_equal(TEST_U8_DATA0, sigmf0.read_samples(autoscale=False))
     assert np.array_equal(np.array([]), sigmf0.read_samples_in_capture(0))
-    assert np.array_equal(TEST_U8_DATA0, sigmf0.read_samples_in_capture(1,autoscale=False))
+    assert np.array_equal(TEST_U8_DATA0, sigmf0.read_samples_in_capture(1, autoscale=False))
 
     assert sigmf1._count_samples() == 192
     assert not sigmf1._is_conforming_dataset()
-    assert (32,160) == sigmf1.get_capture_byte_boundarys(0)
-    assert (160,224) == sigmf1.get_capture_byte_boundarys(1)
-    assert np.array_equal(np.array(range(128)), sigmf1.read_samples_in_capture(0,autoscale=False))
-    assert np.array_equal(np.array(range(128,192)), sigmf1.read_samples_in_capture(1,autoscale=False))
+    assert (32, 160) == sigmf1.get_capture_byte_boundarys(0)
+    assert (160, 224) == sigmf1.get_capture_byte_boundarys(1)
+    assert np.array_equal(np.array(range(128)), sigmf1.read_samples_in_capture(0, autoscale=False))
+    assert np.array_equal(np.array(range(128, 192)), sigmf1.read_samples_in_capture(1, autoscale=False))
 
     assert sigmf2._count_samples() == 192
     assert not sigmf2._is_conforming_dataset()
-    assert (32,160) == sigmf2.get_capture_byte_boundarys(0)
-    assert (176,240) == sigmf2.get_capture_byte_boundarys(1)
-    assert np.array_equal(np.array(range(128)), sigmf2.read_samples_in_capture(0,autoscale=False))
-    assert np.array_equal(np.array(range(128,192)), sigmf2.read_samples_in_capture(1,autoscale=False))
+    assert (32, 160) == sigmf2.get_capture_byte_boundarys(0)
+    assert (176, 240) == sigmf2.get_capture_byte_boundarys(1)
+    assert np.array_equal(np.array(range(128)), sigmf2.read_samples_in_capture(0, autoscale=False))
+    assert np.array_equal(np.array(range(128, 192)), sigmf2.read_samples_in_capture(1, autoscale=False))
 
     assert sigmf3._count_samples() == 192
     assert not sigmf3._is_conforming_dataset()
-    assert (32,64) == sigmf3.get_capture_byte_boundarys(0)
-    assert (64,160) == sigmf3.get_capture_byte_boundarys(1)
-    assert (192,256) == sigmf3.get_capture_byte_boundarys(2)
-    assert np.array_equal(np.array(range(32)), sigmf3.read_samples_in_capture(0,autoscale=False))
-    assert np.array_equal(np.array(range(32,128)), sigmf3.read_samples_in_capture(1,autoscale=False))
-    assert np.array_equal(np.array(range(128,192)), sigmf3.read_samples_in_capture(2,autoscale=False))
+    assert (32, 64) == sigmf3.get_capture_byte_boundarys(0)
+    assert (64, 160) == sigmf3.get_capture_byte_boundarys(1)
+    assert (192, 256) == sigmf3.get_capture_byte_boundarys(2)
+    assert np.array_equal(np.array(range(32)), sigmf3.read_samples_in_capture(0, autoscale=False))
+    assert np.array_equal(np.array(range(32, 128)), sigmf3.read_samples_in_capture(1, autoscale=False))
+    assert np.array_equal(np.array(range(128, 192)), sigmf3.read_samples_in_capture(2, autoscale=False))
 
     assert sigmf4._count_samples() == 96
     assert not sigmf4._is_conforming_dataset()
-    assert (32,160) == sigmf4.get_capture_byte_boundarys(0)
-    assert (160,224) == sigmf4.get_capture_byte_boundarys(1)
-    assert np.array_equal(np.array(range(64)), sigmf4.read_samples_in_capture(0,autoscale=False)[:,0])
-    assert np.array_equal(np.array(range(64,96)), sigmf4.read_samples_in_capture(1,autoscale=False)[:,1])
+    assert (32, 160) == sigmf4.get_capture_byte_boundarys(0)
+    assert (160, 224) == sigmf4.get_capture_byte_boundarys(1)
+    assert np.array_equal(np.array(range(64)), sigmf4.read_samples_in_capture(0, autoscale=False)[:, 0])
+    assert np.array_equal(np.array(range(64, 96)), sigmf4.read_samples_in_capture(1, autoscale=False)[:, 1])
+
 
 def test_slicing():
-    '''Test __getitem___ builtin for sigmffile, make sure slicing and indexing works as expected.'''
+    """Test __getitem___ builtin for sigmffile, make sure slicing and indexing works as expected."""
     _, temp_data0 = tempfile.mkstemp()
     np.array(TEST_U8_DATA0, dtype=np.uint8).tofile(temp_data0)
     sigmf0 = SigMFFile(metadata=TEST_U8_META0, data_file=temp_data0)
@@ -337,8 +331,8 @@ def test_slicing():
     _, temp_data2 = tempfile.mkstemp()
     np.array(TEST_U8_DATA4, dtype=np.uint8).tofile(temp_data2)
     sigmf2 = SigMFFile(TEST_U8_META4, data_file=temp_data2)
-    channelized = np.array(TEST_U8_DATA4).reshape((128,2))
+    channelized = np.array(TEST_U8_DATA4).reshape((128, 2))
     assert np.array_equal(channelized, sigmf2[:][:])
     assert np.array_equal(sigmf2[10:20, 91:112], sigmf2.read_samples(autoscale=False)[10:20, 91:112])
     assert np.array_equal(sigmf2[0], channelized[0])
-    assert np.array_equal(sigmf2[1,:], channelized[1,:])
+    assert np.array_equal(sigmf2[1, :], channelized[1, :])
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 9a98ed4..e3599dc 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,3 +1,11 @@
+# Copyright: Multiple Authors
+#
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+"""Tests for Utilities"""
+
 from datetime import datetime
 
 import pytest
diff --git a/tests/test_validation.py b/tests/test_validation.py
index ce427a1..7b74be9 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -1,79 +1,66 @@
-# Copyright 2016 GNU Radio Foundation
+# Copyright: Multiple Authors
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+"""Tests for Validator"""
 
 import tempfile
 import unittest
 
+from jsonschema.exceptions import ValidationError
+
 import sigmf
 from sigmf import SigMFFile
 
-from jsonschema.exceptions import ValidationError
-
 from .testdata import TEST_FLOAT32_DATA, TEST_METADATA
 
 
 def test_valid_data():
-    '''assure the supplied metadata is OK'''
+    """assure the supplied metadata is OK"""
     invalid_metadata = dict(TEST_METADATA)
     SigMFFile(TEST_METADATA).validate()
 
+
 class FailingCases(unittest.TestCase):
-    '''Cases where the validator should throw an exception.'''
+    """Cases where the validator should throw an exception."""
+
     def setUp(self):
         self.metadata = dict(TEST_METADATA)
 
     def test_no_version(self):
-        '''core:version must be present'''
+        """core:version must be present"""
         del self.metadata[SigMFFile.GLOBAL_KEY][SigMFFile.VERSION_KEY]
         with self.assertRaises(ValidationError):
             SigMFFile(self.metadata).validate()
 
     def test_extra_top_level_key(self):
-        '''no extra keys allowed on the top level'''
-        self.metadata['extra'] = 0
+        """no extra keys allowed on the top level"""
+        self.metadata["extra"] = 0
         with self.assertRaises(ValidationError):
             SigMFFile(self.metadata).validate()
 
     def test_extra_top_level_key(self):
-        '''label must be less than 20 chars'''
-        self.metadata[SigMFFile.ANNOTATION_KEY][0][SigMFFile.LABEL_KEY] = 'a' * 21
+        """label must be less than 20 chars"""
+        self.metadata[SigMFFile.ANNOTATION_KEY][0][SigMFFile.LABEL_KEY] = "a" * 21
         with self.assertRaises(ValidationError):
             SigMFFile(self.metadata).validate()
 
     def test_invalid_type(self):
-        '''license key must be string'''
+        """license key must be string"""
         self.metadata[SigMFFile.GLOBAL_KEY][SigMFFile.LICENSE_KEY] = 1
         with self.assertRaises(ValidationError):
             SigMFFile(self.metadata).validate()
 
     def test_invalid_capture_order(self):
-        '''metadata must have captures in order'''
-        self.metadata[SigMFFile.CAPTURE_KEY] = [
-            {SigMFFile.START_INDEX_KEY: 10},
-            {SigMFFile.START_INDEX_KEY: 9}
-        ]
+        """metadata must have captures in order"""
+        self.metadata[SigMFFile.CAPTURE_KEY] = [{SigMFFile.START_INDEX_KEY: 10}, {SigMFFile.START_INDEX_KEY: 9}]
         with self.assertRaises(ValidationError):
             SigMFFile(self.metadata).validate()
 
     def test_invalid_annotation_order(self):
-        '''metadata must have annotations in order'''
+        """metadata must have annotations in order"""
         self.metadata[SigMFFile.ANNOTATION_KEY] = [
             {
                 SigMFFile.START_INDEX_KEY: 2,
@@ -82,24 +69,19 @@ def test_invalid_annotation_order(self):
             {
                 SigMFFile.START_INDEX_KEY: 1,
                 SigMFFile.LENGTH_INDEX_KEY: 120000,
-            }
+            },
         ]
         with self.assertRaises(ValidationError):
             SigMFFile(self.metadata).validate()
 
     def test_annotation_without_sample_count(self):
-        '''annotation without length should be accepted'''
-        self.metadata[SigMFFile.ANNOTATION_KEY] = [
-            {
-                SigMFFile.START_INDEX_KEY: 2
-            }
-        ]
+        """annotation without length should be accepted"""
+        self.metadata[SigMFFile.ANNOTATION_KEY] = [{SigMFFile.START_INDEX_KEY: 2}]
         SigMFFile(self.metadata).validate()
 
-
     def test_invalid_hash(self):
         _, temp_path = tempfile.mkstemp()
         TEST_FLOAT32_DATA.tofile(temp_path)
-        self.metadata[SigMFFile.GLOBAL_KEY][SigMFFile.HASH_KEY] = 'derp'
+        self.metadata[SigMFFile.GLOBAL_KEY][SigMFFile.HASH_KEY] = "derp"
         with self.assertRaises(sigmf.error.SigMFFileError):
             SigMFFile(metadata=self.metadata, data_file=temp_path)
diff --git a/tests/testdata.py b/tests/testdata.py
index cb05bee..b91ad67 100644
--- a/tests/testdata.py
+++ b/tests/testdata.py
@@ -1,29 +1,14 @@
-# flake8: noqa
-
-# Copyright 2017 GNU Radio Foundation
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
+# Copyright: Multiple Authors
 #
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
+# This file is part of sigmf-python. https://github.com/sigmf/sigmf-python
 #
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
+# SPDX-License-Identifier: LGPL-3.0-or-later
 
+"""Shared test data for tests."""
 
 import numpy as np
-from sigmf import __version__
-from sigmf import SigMFFile
+
+from sigmf import SigMFFile, __specification__, __version__
 
 TEST_FLOAT32_DATA = np.arange(16, dtype=np.float32)
 
@@ -31,51 +16,65 @@
     SigMFFile.ANNOTATION_KEY: [{SigMFFile.LENGTH_INDEX_KEY: 16, SigMFFile.START_INDEX_KEY: 0}],
     SigMFFile.CAPTURE_KEY: [{SigMFFile.START_INDEX_KEY: 0}],
     SigMFFile.GLOBAL_KEY: {
-        SigMFFile.DATATYPE_KEY: 'rf32_le',
-        SigMFFile.HASH_KEY: 'f4984219b318894fa7144519185d1ae81ea721c6113243a52b51e444512a39d74cf41a4cec3c5d000bd7277cc71232c04d7a946717497e18619bdbe94bfeadd6',
+        SigMFFile.DATATYPE_KEY: "rf32_le",
+        SigMFFile.HASH_KEY: "f4984219b318894fa7144519185d1ae81ea721c6113243a52b51e444512a39d74cf41a4cec3c5d000bd7277cc71232c04d7a946717497e18619bdbe94bfeadd6",
         SigMFFile.NUM_CHANNELS_KEY: 1,
-        SigMFFile.VERSION_KEY: '1.0.0'
-    }
+        SigMFFile.VERSION_KEY: __specification__,
+    },
 }
 
 # Data0 is a test of a compliant two capture recording
 TEST_U8_DATA0 = list(range(256))
 TEST_U8_META0 = {
     SigMFFile.ANNOTATION_KEY: [],
-    SigMFFile.CAPTURE_KEY: [ {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 0},
-                             {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 0} ],   # very strange..but technically legal?
-    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: 'ru8', SigMFFile.TRAILING_BYTES_KEY: 0}
+    SigMFFile.CAPTURE_KEY: [
+        {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 0},
+        {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 0},
+    ],  # very strange..but technically legal?
+    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: "ru8", SigMFFile.TRAILING_BYTES_KEY: 0},
 }
 # Data1 is a test of a two capture recording with header_bytes and trailing_bytes set
-TEST_U8_DATA1 = [0xfe]*32 + list(range(192)) + [0xff]*32
+TEST_U8_DATA1 = [0xFE] * 32 + list(range(192)) + [0xFF] * 32
 TEST_U8_META1 = {
     SigMFFile.ANNOTATION_KEY: [],
-    SigMFFile.CAPTURE_KEY: [ {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
-                             {SigMFFile.START_INDEX_KEY: 128} ],
-    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: 'ru8', SigMFFile.TRAILING_BYTES_KEY: 32}
+    SigMFFile.CAPTURE_KEY: [
+        {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
+        {SigMFFile.START_INDEX_KEY: 128},
+    ],
+    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: "ru8", SigMFFile.TRAILING_BYTES_KEY: 32},
 }
 # Data2 is a test of a two capture recording with multiple header_bytes set
-TEST_U8_DATA2 = [0xfe]*32 + list(range(128)) + [0xfe]*16 + list(range(128,192)) + [0xff]*16
+TEST_U8_DATA2 = [0xFE] * 32 + list(range(128)) + [0xFE] * 16 + list(range(128, 192)) + [0xFF] * 16
 TEST_U8_META2 = {
     SigMFFile.ANNOTATION_KEY: [],
-    SigMFFile.CAPTURE_KEY: [ {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
-                             {SigMFFile.START_INDEX_KEY: 128, SigMFFile.HEADER_BYTES_KEY: 16} ],
-    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: 'ru8', SigMFFile.TRAILING_BYTES_KEY: 16}
+    SigMFFile.CAPTURE_KEY: [
+        {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
+        {SigMFFile.START_INDEX_KEY: 128, SigMFFile.HEADER_BYTES_KEY: 16},
+    ],
+    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: "ru8", SigMFFile.TRAILING_BYTES_KEY: 16},
 }
 # Data3 is a test of a three capture recording with multiple header_bytes set
-TEST_U8_DATA3 = [0xfe]*32 + list(range(128)) + [0xfe]*32 + list(range(128,192))
+TEST_U8_DATA3 = [0xFE] * 32 + list(range(128)) + [0xFE] * 32 + list(range(128, 192))
 TEST_U8_META3 = {
     SigMFFile.ANNOTATION_KEY: [],
-    SigMFFile.CAPTURE_KEY: [ {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
-                             {SigMFFile.START_INDEX_KEY: 32},
-                             {SigMFFile.START_INDEX_KEY: 128, SigMFFile.HEADER_BYTES_KEY: 32} ],
-    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: 'ru8'}
+    SigMFFile.CAPTURE_KEY: [
+        {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
+        {SigMFFile.START_INDEX_KEY: 32},
+        {SigMFFile.START_INDEX_KEY: 128, SigMFFile.HEADER_BYTES_KEY: 32},
+    ],
+    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: "ru8"},
 }
 # Data4 is a two channel version of Data0
-TEST_U8_DATA4 = [0xfe]*32 + [y for y in list(range(96)) for i in [0,1]] + [0xff]*32
+TEST_U8_DATA4 = [0xFE] * 32 + [y for y in list(range(96)) for i in [0, 1]] + [0xFF] * 32
 TEST_U8_META4 = {
     SigMFFile.ANNOTATION_KEY: [],
-    SigMFFile.CAPTURE_KEY: [ {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
-                             {SigMFFile.START_INDEX_KEY: 64} ],
-    SigMFFile.GLOBAL_KEY: {SigMFFile.DATATYPE_KEY: 'ru8', SigMFFile.TRAILING_BYTES_KEY: 32, SigMFFile.NUM_CHANNELS_KEY: 2}
+    SigMFFile.CAPTURE_KEY: [
+        {SigMFFile.START_INDEX_KEY: 0, SigMFFile.HEADER_BYTES_KEY: 32},
+        {SigMFFile.START_INDEX_KEY: 64},
+    ],
+    SigMFFile.GLOBAL_KEY: {
+        SigMFFile.DATATYPE_KEY: "ru8",
+        SigMFFile.TRAILING_BYTES_KEY: 32,
+        SigMFFile.NUM_CHANNELS_KEY: 2,
+    },
 }