diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 47068a08..00000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/README.rst b/README.rst
index e89310aa..2531f84b 100644
--- a/README.rst
+++ b/README.rst
@@ -80,8 +80,8 @@ Besides the numerical argument, there are two main optional arguments, ``to:`` a
 * ``ar`` (Arabic)
 * ``az`` (Azerbaijani)
 * ``cs`` (Czech)
-* ``de`` (German)
 * ``da`` (Danish)
+* ``de`` (German)
 * ``en_GB`` (English - Great Britain)
 * ``en_IN`` (English - India)
 * ``en_NG`` (English - Nigeria)
@@ -102,9 +102,9 @@ Besides the numerical argument, there are two main optional arguments, ``to:`` a
 * ``is`` (Icelandic)
 * ``it`` (Italian)
 * ``ja`` (Japanese)
+* ``kk`` (Kazakh)
 * ``kn`` (Kannada)
 * ``ko`` (Korean)
-* ``kk`` (Kazakh)
 * ``lt`` (Lithuanian)
 * ``lv`` (Latvian)
 * ``no`` (Norwegian)
diff --git a/bin/num2words b/bin/num2words
index 06ff0443..8f87533d 100755
--- a/bin/num2words
+++ b/bin/num2words
@@ -50,9 +50,12 @@ Examples:
 """
 
 from __future__ import print_function, unicode_literals
+
 import os
 import sys
+
 from docopt import docopt
+
 import num2words
 
 __version__ = "0.5.12"
diff --git a/num2words/__init__.py b/num2words/__init__.py
index 79d6f3da..b4a81a36 100644
--- a/num2words/__init__.py
+++ b/num2words/__init__.py
@@ -17,56 +17,14 @@
 
 from __future__ import unicode_literals
 
-from . import (
-    lang_AM,
-    lang_AR,
-    lang_AZ,
-    lang_CS,
-    lang_DA,
-    lang_DE,
-    lang_EN,
-    lang_EN_IN,
-    lang_EN_NG,
-    lang_EO,
-    lang_ES,
-    lang_ES_CO,
-    lang_ES_GT,
-    lang_ES_NI,
-    lang_ES_VE,
-    lang_FA,
-    lang_FI,
-    lang_FR,
-    lang_FR_BE,
-    lang_FR_CH,
-    lang_FR_DZ,
-    lang_HE,
-    lang_HU,
-    lang_ID,
-    lang_IS,
-    lang_IT,
-    lang_JA,
-    lang_KK,
-    lang_KN,
-    lang_KO,
-    lang_LT,
-    lang_LV,
-    lang_NL,
-    lang_NO,
-    lang_PL,
-    lang_PT,
-    lang_PT_BR,
-    lang_RO,
-    lang_RU,
-    lang_SL,
-    lang_SR,
-    lang_SV,
-    lang_TE,
-    lang_TG,
-    lang_TH,
-    lang_TR,
-    lang_UK,
-    lang_VI,
-)
+from . import (lang_AM, lang_AR, lang_AZ, lang_CS, lang_DA, lang_DE, lang_EN,
+               lang_EN_IN, lang_EN_NG, lang_EO, lang_ES, lang_ES_CO,
+               lang_ES_GT, lang_ES_NI, lang_ES_VE, lang_FA, lang_FI, lang_FR,
+               lang_FR_BE, lang_FR_CH, lang_FR_DZ, lang_HE, lang_HU, lang_ID,
+               lang_IS, lang_IT, lang_JA, lang_KK, lang_KN, lang_KO, lang_LT,
+               lang_LV, lang_NL, lang_NO, lang_PL, lang_PT, lang_PT_BR,
+               lang_RO, lang_RU, lang_SL, lang_SR, lang_SV, lang_TE, lang_TG,
+               lang_TH, lang_TR, lang_UK, lang_VI)
 
 CONVERTER_CLASSES = {
     "am": lang_AM.Num2Word_AM(),
diff --git a/num2words/lang_CS.py b/num2words/lang_CS.py
index 836b083f..246e547a 100644
--- a/num2words/lang_CS.py
+++ b/num2words/lang_CS.py
@@ -99,9 +99,8 @@ def to_cardinal(self, number):
         if "." in n:
             left, right = n.split(".")
             leading_zero_count = len(right) - len(right.lstrip("0"))
-            decimal_part = (ZERO[0] + " ") * leading_zero_count + self._int2word(
-                int(right)
-            )
+            leading_zeros = (ZERO[0] + " ") * leading_zero_count
+            decimal_part = leading_zeros + self._int2word(int(right))
             return "%s %s %s" % (
                 self._int2word(int(left)),
                 self.pointword,
diff --git a/num2words/lang_DA.py b/num2words/lang_DA.py
index d7e2f03c..b3da892b 100644
--- a/num2words/lang_DA.py
+++ b/num2words/lang_DA.py
@@ -147,7 +147,10 @@ def to_ordinal_num(self, value):
     def to_currency(self, val, longval=True):
         if val // 100 == 1 or val == 1:
             ret = self.to_splitnum(
-                val, hightxt="kr", lowtxt="\xf8re", jointxt="og", longval=longval
+                val, hightxt="kr",
+                lowtxt="\xf8re",
+                jointxt="og",
+                longval=longval
             )
             return "en " + ret[3:]
         return self.to_splitnum(
diff --git a/tests/test_cs.py b/tests/test_cs.py
index 974eb2bb..bde0bf29 100644
--- a/tests/test_cs.py
+++ b/tests/test_cs.py
@@ -33,12 +33,14 @@ def test_cardinal(self):
         self.assertEqual(num2words(1001, lang="cs"), "tisíc jedna")
         self.assertEqual(num2words(2012, lang="cs"), "dva tisíce dvanáct")
         self.assertEqual(num2words(10.02, lang="cs"), "deset celá nula dva")
-        self.assertEqual(num2words(15.007, lang="cs"), "patnáct celá nula nula sedm")
+        self.assertEqual(num2words(15.007, lang="cs"),
+                         "patnáct celá nula nula sedm")
         self.assertEqual(
             num2words(12519.85, lang="cs"),
-            "dvanáct tisíc pětset devatenáct celá osmdesát pět",
+            "dvanáct tisíc pětset devatenáct celá osmdesát pět"
         )
-        self.assertEqual(num2words(123.50, lang="cs"), "sto dvacet tři celá pět")
+        self.assertEqual(num2words(123.50, lang="cs"),
+                         "sto dvacet tři celá pět")
         self.assertEqual(
             num2words(1234567890, lang="cs"),
             "miliarda dvěstě třicet čtyři miliony pětset šedesát "
@@ -86,11 +88,19 @@ def test_currency(self):
             "tisíc dvěstě třicet čtyři koruny, padesát šest haléřů",
         )
         self.assertEqual(
-            num2words(101.11, lang="cs", to="currency", currency="EUR", separator=" a"),
+            num2words(101.11,
+                      lang="cs",
+                      to="currency",
+                      currency="EUR",
+                      separator=" a"),
             "sto jedna euro a jedenáct centů",
         )
         self.assertEqual(
-            num2words(101.21, lang="cs", to="currency", currency="CZK", separator=" a"),
+            num2words(101.21,
+                      lang="cs",
+                      to="currency",
+                      currency="CZK",
+                      separator=" a"),
             "sto jedna korun a dvacet jedna haléřů",
         )
         self.assertEqual(
@@ -98,7 +108,11 @@ def test_currency(self):
             "mínus dvanáct tisíc pětset devatenáct euro, 85 centů",
         )
         self.assertEqual(
-            num2words(123.50, lang="cs", to="currency", currency="CZK", separator=" a"),
+            num2words(123.50,
+                      lang="cs",
+                      to="currency",
+                      currency="CZK",
+                      separator=" a"),
             "sto dvacet tři koruny a padesát haléřů",
         )
         self.assertEqual(
diff --git a/tests/test_kk.py b/tests/test_kk.py
index f164d8f7..2ad37b09 100644
--- a/tests/test_kk.py
+++ b/tests/test_kk.py
@@ -28,7 +28,8 @@ def test_to_cardinal(self):
         self.assertEqual(num2words(7, lang="kk"), "жеті")
         self.assertEqual(num2words(23, lang="kk"), "жиырма үш")
         self.assertEqual(num2words(145, lang="kk"), "жүз қырық бес")
-        self.assertEqual(num2words(2869, lang="kk"), "екі мың сегіз жүз алпыс тоғыз")
+        self.assertEqual(num2words(2869, lang="kk"),
+                         "екі мың сегіз жүз алпыс тоғыз")
         self.assertEqual(
             num2words(-789000125, lang="kk"),
             "минус жеті жүз сексен тоғыз миллион жүз жиырма бес",
@@ -42,7 +43,8 @@ def test_to_cardinal_floats(self):
         self.assertEqual(num2words(0.7, lang="kk"), "нөл бүтін жеті")
         self.assertEqual(num2words(1.73, lang="kk"), "бір бүтін жетпіс үш")
         self.assertEqual(num2words(10.02, lang="kk"), "он бүтін нөл екі")
-        self.assertEqual(num2words(15.007, lang="kk"), "он бес бүтін нөл нөл жеті")
+        self.assertEqual(num2words(15.007, lang="kk"),
+                         "он бес бүтін нөл нөл жеті")
 
     def test_to_ordinal(self):
         with self.assertRaises(NotImplementedError):