diff --git a/docs/conf.py b/docs/conf.py
index 5c56c663..8df446ed 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 #
 # Tablib documentation build configuration file, created by
 # sphinx-quickstart on Tue Oct  5 15:25:21 2010.
@@ -38,8 +37,8 @@
 master_doc = 'index'
 
 # General information about the project.
-project = u'Tablib'
-copyright = u'2019 Jazzband'
+project = 'Tablib'
+copyright = '2019 Jazzband'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -181,8 +180,8 @@
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass [howto/manual]).
 latex_documents = [
-  ('index', 'Tablib.tex', u'Tablib Documentation',
-   u'Jazzband', 'manual'),
+  ('index', 'Tablib.tex', 'Tablib Documentation',
+   'Jazzband', 'manual'),
 ]
 
 latex_use_modindex = False
@@ -222,6 +221,6 @@
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index', 'tablib', u'Tablib Documentation',
-     [u'Jazzband'], 1)
+    ('index', 'tablib', 'Tablib Documentation',
+     ['Jazzband'], 1)
 ]
diff --git a/docs/intro.rst b/docs/intro.rst
index 00562c1e..064e5adb 100644
--- a/docs/intro.rst
+++ b/docs/intro.rst
@@ -74,7 +74,7 @@ THE SOFTWARE.
 Pythons Supported
 -----------------
 
-Python 3.5+ are officially supported.
+Python 3.5+ is officially supported.
 
 Now, go :ref:`install Tablib <install>`.
 
diff --git a/pytest.ini b/pytest.ini
index f69d3367..22886516 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,4 +1,4 @@
 [pytest]
 norecursedirs = .git .*
-addopts = -rsxX --showlocals --tb=native --cov=tablib --cov-report xml --cov-report term --cov-report html
+addopts = -rsxX --showlocals --tb=native --cov=tablib --cov=tests --cov-report xml --cov-report term --cov-report html
 python_paths = .
diff --git a/src/tablib/core.py b/src/tablib/core.py
index 23903eb1..61c7a500 100644
--- a/src/tablib/core.py
+++ b/src/tablib/core.py
@@ -40,9 +40,6 @@ def __len__(self):
     def __repr__(self):
         return repr(self._row)
 
-    def __getslice__(self, i, j):
-        return self._row[i:j]
-
     def __getitem__(self, i):
         return self._row[i]
 
@@ -264,7 +261,7 @@ def _validate(self, row=None, col=None, safety=False):
             else:
                 is_valid = (len(col) == self.height) if self.height else True
         else:
-            is_valid = all((len(x) == self.width for x in self._data))
+            is_valid = all(len(x) == self.width for x in self._data)
 
         if is_valid:
             return True
@@ -423,7 +420,7 @@ def load(self, in_stream, format=None, **kwargs):
 
         export_set, import_set = self._formats.get(format, (None, None))
         if not import_set:
-            raise UnsupportedFormat('Format {0} cannot be imported.'.format(format))
+            raise UnsupportedFormat('Format {} cannot be imported.'.format(format))
 
         import_set(self, in_stream, **kwargs)
         return self
@@ -436,7 +433,7 @@ def export(self, format, **kwargs):
         """
         export_set, import_set = self._formats.get(format, (None, None))
         if not export_set:
-            raise UnsupportedFormat('Format {0} cannot be exported.'.format(format))
+            raise UnsupportedFormat('Format {} cannot be exported.'.format(format))
 
         return export_set(self, **kwargs)
 
@@ -1095,7 +1092,7 @@ def load(self, in_stream, format, **kwargs):
 
         export_book, import_book = self._formats.get(format, (None, None))
         if not import_book:
-            raise UnsupportedFormat('Format {0} cannot be loaded.'.format(format))
+            raise UnsupportedFormat('Format {} cannot be loaded.'.format(format))
 
         import_book(self, in_stream, **kwargs)
         return self
@@ -1108,7 +1105,7 @@ def export(self, format, **kwargs):
         """
         export_book, import_book = self._formats.get(format, (None, None))
         if not export_book:
-            raise UnsupportedFormat('Format {0} cannot be exported.'.format(format))
+            raise UnsupportedFormat('Format {} cannot be exported.'.format(format))
 
         return export_book(self, **kwargs)
 
diff --git a/src/tablib/formats/_html.py b/src/tablib/formats/_html.py
index bb311280..edf0c0a0 100644
--- a/src/tablib/formats/_html.py
+++ b/src/tablib/formats/_html.py
@@ -53,7 +53,7 @@ def export_book(databook):
 
     for i, dset in enumerate(databook._datasets):
         title = (dset.title if dset.title else 'Set %s' % (i))
-        wrapper.write('<%s>%s</%s>\n' % (BOOK_ENDINGS, title, BOOK_ENDINGS))
+        wrapper.write('<{}>{}</{}>\n'.format(BOOK_ENDINGS, title, BOOK_ENDINGS))
         wrapper.write(dset.html)
         wrapper.write('\n')
 
diff --git a/src/tablib/formats/_jira.py b/src/tablib/formats/_jira.py
index 99dbf3ee..96efcf77 100644
--- a/src/tablib/formats/_jira.py
+++ b/src/tablib/formats/_jira.py
@@ -19,7 +19,7 @@ def export_set(dataset):
 
     header = _get_header(dataset.headers) if dataset.headers else ''
     body = _get_body(dataset)
-    return '%s\n%s' % (header, body) if header else body
+    return '{}\n{}'.format(header, body) if header else body
 
 
 def _get_body(dataset):
@@ -31,6 +31,6 @@ def _get_header(headers):
 
 
 def _serialize_row(row, delimiter='|'):
-    return '%s%s%s' % (delimiter,
-                       delimiter.join([str(item) if item else ' ' for item in row]),
-                       delimiter)
+    return '{}{}{}'.format(delimiter,
+                           delimiter.join([str(item) if item else ' ' for item in row]),
+                           delimiter)
diff --git a/src/tablib/formats/_rst.py b/src/tablib/formats/_rst.py
index 8b5cfa06..8067f73e 100644
--- a/src/tablib/formats/_rst.py
+++ b/src/tablib/formats/_rst.py
@@ -34,7 +34,7 @@ def _max_word_len(text):
     8
 
     """
-    return max((len(word) for word in text.split())) if text else 0
+    return max(len(word) for word in text.split()) if text else 0
 
 
 def _get_column_string_lengths(dataset):
diff --git a/src/tablib/formats/_xlsx.py b/src/tablib/formats/_xlsx.py
index 0a947b8b..6ac46b97 100644
--- a/src/tablib/formats/_xlsx.py
+++ b/src/tablib/formats/_xlsx.py
@@ -112,7 +112,7 @@ def dset_sheet(dataset, ws, freeze_panes=True):
         row_number = i + 1
         for j, col in enumerate(row):
             col_idx = get_column_letter(j + 1)
-            cell = ws['%s%s' % (col_idx, row_number)]
+            cell = ws['{}{}'.format(col_idx, row_number)]
 
             # bold headers
             if (row_number == 1) and dataset.headers:
diff --git a/src/tablib/packages/dbfpy/dbfnew.py b/src/tablib/packages/dbfpy/dbfnew.py
index 29c09a1e..15620211 100644
--- a/src/tablib/packages/dbfpy/dbfnew.py
+++ b/src/tablib/packages/dbfpy/dbfnew.py
@@ -176,7 +176,7 @@ def write(self, filename):
     for i1 in range(len(dbft)):
         rec = dbft[i1]
         for fldName in dbft.fieldNames:
-            print('%s:\t %s' % (fldName, rec[fldName]))
+            print('{}:\t {}'.format(fldName, rec[fldName]))
         print()
     dbft.close()
 
diff --git a/src/tablib/packages/dbfpy/fields.py b/src/tablib/packages/dbfpy/fields.py
index c763e1ea..d6ee84ef 100644
--- a/src/tablib/packages/dbfpy/fields.py
+++ b/src/tablib/packages/dbfpy/fields.py
@@ -134,11 +134,7 @@ def toString(self):
             definition of this field.
 
         """
-        if sys.version_info < (2, 4):
-            # earlier versions did not support padding character
-            _name = self.name[:11] + "\0" * (11 - len(self.name))
-        else:
-            _name = self.name.ljust(11, '\0')
+        _name = self.name.ljust(11, '\0')
         return (
             _name +
             self.typeCode +
@@ -311,7 +307,7 @@ def decodeValue(self, value):
             return False
         if value in "YyTt":
             return True
-        raise ValueError("[%s] Invalid logical value %r" % (self.name, value))
+        raise ValueError("[{}] Invalid logical value {!r}".format(self.name, value))
 
     def encodeValue(self, value):
         """Return a character from the "TF?" set.
diff --git a/src/tablib/packages/dbfpy/utils.py b/src/tablib/packages/dbfpy/utils.py
index b3388a77..284d3eec 100644
--- a/src/tablib/packages/dbfpy/utils.py
+++ b/src/tablib/packages/dbfpy/utils.py
@@ -158,9 +158,6 @@ def __float__(self):
     def __str__(self):
         return ""
 
-    def __unicode__(self):
-        return ""
-
     def __repr__(self):
         return "<INVALID>"
 
diff --git a/tests/test_tablib.py b/tests/test_tablib.py
index 77f2ef66..5464a8d9 100755
--- a/tests/test_tablib.py
+++ b/tests/test_tablib.py
@@ -4,6 +4,7 @@
 import datetime
 import doctest
 import json
+import pickle
 import unittest
 from uuid import uuid4
 
@@ -202,7 +203,7 @@ def test_data_slicing(self):
         self.assertEqual(self.founders[2:], [self.tom])
 
     def test_row_slicing(self):
-        """Verify Row's __getslice__ method. Issue #184."""
+        """Verify Row slicing. Issue #184."""
 
         john = Row(self.john)
 
@@ -486,6 +487,87 @@ def test_databook_formatter_with_new_lines(self):
         self.founders.append(('First\nSecond', 'Name', 42))
         self.founders.export('xlsx')
 
+    def test_row_repr(self):
+        """Row repr."""
+        # Arrange
+        john = Row(self.john)
+
+        # Act
+        output = str(john)
+
+        # Assert
+        self.assertEqual(output, "['John', 'Adams', 90]")
+
+    def test_row_pickle_unpickle(self):
+        """Row __setstate__ and __getstate__."""
+        # Arrange
+        before_pickle = Row(self.john)
+
+        # Act
+        output = pickle.loads(pickle.dumps(before_pickle))
+
+        # Assert
+        self.assertEqual(output[0], before_pickle[0])
+        self.assertEqual(output[1], before_pickle[1])
+        self.assertEqual(output[2], before_pickle[2])
+
+    def test_row_lpush(self):
+        """Row lpush."""
+        # Arrange
+        john = Row(self.john)
+        george = Row(self.george)
+
+        # Act
+        john.lpush(george)
+
+        # Assert
+        self.assertEqual(john[-1], george)
+
+    def test_row_append(self):
+        """Row append."""
+        # Arrange
+        john = Row(self.john)
+        george = Row(self.george)
+
+        # Act
+        john.append(george)
+
+        # Assert
+        self.assertEqual(john[0], george)
+
+    def test_row_contains(self):
+        """Row __contains__."""
+        # Arrange
+        john = Row(self.john)
+
+        # Act / Assert
+        self.assertIn("John", john)
+
+    def test_row_no_tag(self):
+        """Row has_tag."""
+        # Arrange
+        john = Row(self.john)
+
+        # Act / Assert
+        self.assertFalse(john.has_tag("not found"))
+        self.assertFalse(john.has_tag(None))
+
+    def test_row_has_tag(self):
+        """Row has_tag."""
+        # Arrange
+        john = Row(self.john, tags=["tag1"])
+
+        # Act / Assert
+        self.assertTrue(john.has_tag("tag1"))
+
+    def test_row_has_tags(self):
+        """Row has_tag."""
+        # Arrange
+        john = Row(self.john, tags=["tag1", "tag2"])
+
+        # Act / Assert
+        self.assertTrue(john.has_tag(["tag2", "tag1"]))
+
 
 class HTMLTests(BaseTestCase):
     def test_html_export(self):
@@ -1012,7 +1094,7 @@ def test_dbf_import_set(self):
             for reg_char, data_char in zip(_dbf, data.dbf):
                 so_far += chr(data_char)
                 if reg_char != data_char and index not in [1, 2, 3]:
-                    raise AssertionError('Failing at char %s: %s vs %s %s' % (
+                    raise AssertionError('Failing at char {}: {} vs {} {}'.format(
                         index, reg_char, data_char, so_far))
                 index += 1
 
@@ -1055,7 +1137,7 @@ def test_dbf_export_set(self):
                 # found_so_far += chr(data_char)
                 if reg_char != data_char and index not in [1, 2, 3]:
                     raise AssertionError(
-                        'Failing at char %s: %s vs %s (found %s)' % (
+                        'Failing at char {}: {} vs {} (found {})'.format(
                             index, reg_char, data_char, found_so_far))
                 index += 1
 
diff --git a/tests/test_tablib_dbfpy_packages_utils.py b/tests/test_tablib_dbfpy_packages_utils.py
new file mode 100644
index 00000000..9288916f
--- /dev/null
+++ b/tests/test_tablib_dbfpy_packages_utils.py
@@ -0,0 +1,170 @@
+#!/usr/bin/env python
+"""Tests for tablib.packages.dbfpy."""
+
+import datetime
+import unittest
+
+from tablib.packages.dbfpy import utils
+
+
+class UtilsUnzfillTestCase(unittest.TestCase):
+    """dbfpy.utils.unzfill test cases."""
+
+    def test_unzfill_with_nul(self):
+        # Arrange
+        text = b"abc\0xyz"
+
+        # Act
+        output = utils.unzfill(text)
+
+        # Assert
+        self.assertEqual(output, b"abc")
+
+    def test_unzfill_without_nul(self):
+        # Arrange
+        text = b"abcxyz"
+
+        # Act
+        output = utils.unzfill(text)
+
+        # Assert
+        self.assertEqual(output, b"abcxyz")
+
+
+class UtilsGetDateTestCase(unittest.TestCase):
+    """dbfpy.utils.getDate test cases."""
+
+    def test_getDate_none(self):
+        # Arrange
+        value = None
+
+        # Act
+        output = utils.getDate(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+
+    def test_getDate_datetime_date(self):
+        # Arrange
+        value = datetime.date(2019, 10, 19)
+
+        # Act
+        output = utils.getDate(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, value)
+
+    def test_getDate_datetime_datetime(self):
+        # Arrange
+        value = datetime.datetime(2019, 10, 19, 12, 00, 00)
+
+        # Act
+        output = utils.getDate(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, value)
+
+    def test_getDate_datetime_timestamp(self):
+        # Arrange
+        value = 1571515306
+
+        # Act
+        output = utils.getDate(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, datetime.date(2019, 10, 19))
+
+    def test_getDate_datetime_string_yyyy_mm_dd(self):
+        # Arrange
+        value = "20191019"
+
+        # Act
+        output = utils.getDate(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, datetime.date(2019, 10, 19))
+
+    def test_getDate_datetime_string_yymmdd(self):
+        # Arrange
+        value = "191019"
+
+        # Act
+        output = utils.getDate(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, datetime.date(2019, 10, 19))
+
+
+class UtilsGetDateTimeTestCase(unittest.TestCase):
+    """dbfpy.utils.getDateTime test cases."""
+
+    def test_getDateTime_none(self):
+        # Arrange
+        value = None
+
+        # Act
+        output = utils.getDateTime(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.datetime)
+
+    def test_getDateTime_datetime_datetime(self):
+        # Arrange
+        value = datetime.datetime(2019, 10, 19, 12, 00, 00)
+
+        # Act
+        output = utils.getDateTime(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, value)
+
+    def test_getDateTime_datetime_date(self):
+        # Arrange
+        value = datetime.date(2019, 10, 19)
+
+        # Act
+        output = utils.getDateTime(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.date)
+        self.assertEqual(output, datetime.datetime(2019, 10, 19, 00, 00))
+
+    def test_getDateTime_datetime_timestamp(self):
+        # Arrange
+        value = 1571515306
+
+        # Act
+        output = utils.getDateTime(value)
+
+        # Assert
+        self.assertIsInstance(output, datetime.datetime)
+
+    def test_getDateTime_datetime_string(self):
+        # Arrange
+        value = "20191019"
+
+        # Act / Assert
+        with self.assertRaises(NotImplementedError):
+            output = utils.getDateTime(value)
+
+
+class InvalidValueTestCase(unittest.TestCase):
+    """dbfpy.utils._InvalidValue test cases."""
+
+    def test_sanity(self):
+        # Arrange
+        INVALID_VALUE = utils.INVALID_VALUE
+
+        # Act / Assert
+        self.assertEqual(INVALID_VALUE, INVALID_VALUE)
+        self.assertNotEqual(INVALID_VALUE, 123)
+        self.assertEqual(int(INVALID_VALUE), 0)
+        self.assertEqual(float(INVALID_VALUE), 0.0)
+        self.assertEqual(str(INVALID_VALUE), "")
+        self.assertEqual(repr(INVALID_VALUE), "<INVALID>")