diff --git a/src/barril/__init__.py b/src/barril/__init__.py
index ca75d42..49e73f4 100644
--- a/src/barril/__init__.py
+++ b/src/barril/__init__.py
@@ -1,4 +1,3 @@
-
 """Top-level package for Barril."""
 
 __author__ = """ESSS"""
diff --git a/src/barril/basic/format_float/_tests/test_format_float.py b/src/barril/basic/format_float/_tests/test_format_float.py
index dde11ec..2acb1c5 100644
--- a/src/barril/basic/format_float/_tests/test_format_float.py
+++ b/src/barril/basic/format_float/_tests/test_format_float.py
@@ -1,4 +1,3 @@
-
 import locale
 
 from barril.basic.format_float import FormatFloat, MINUS_INFINITY, NAN, PLUS_INFINITY
diff --git a/src/barril/conftest.py b/src/barril/conftest.py
index de08fae..448711b 100644
--- a/src/barril/conftest.py
+++ b/src/barril/conftest.py
@@ -1,4 +1,3 @@
-
 import pytest
 
 from barril import units
diff --git a/src/barril/units/_quantity.py b/src/barril/units/_quantity.py
index a3f877b..a9e48d0 100644
--- a/src/barril/units/_quantity.py
+++ b/src/barril/units/_quantity.py
@@ -661,9 +661,16 @@ def Convert(self, value, to_unit):
             An object with values to the passed unit.
         """
         try:
-            return self._unit_database.Convert(self._composing_categories, self._composing_units, to_unit, value)
+            return self._unit_database.Convert(
+                self._composing_categories, self._composing_units, to_unit, value
+            )
         except:
-            return self._unit_database.Convert(self._category, self._CreateUnitsWithJoinedExponentsString(), to_unit, value)
+            return self._unit_database.Convert(
+                self._category,
+                self._CreateUnitsWithJoinedExponentsString(),
+                to_unit,
+                value,
+            )
 
     @classmethod
     def _GetComparison(cls, operator, use_literals=False):
diff --git a/src/barril/units/_tests/test_posc.py b/src/barril/units/_tests/test_posc.py
index 2638014..88db09c 100644
--- a/src/barril/units/_tests/test_posc.py
+++ b/src/barril/units/_tests/test_posc.py
@@ -1,4 +1,3 @@
-
 from barril import units
 from barril.units import ObtainQuantity
 from barril.units.posc import (
diff --git a/src/barril/units/_tests/test_posc2.py b/src/barril/units/_tests/test_posc2.py
index 3cf9bc8..419b21e 100644
--- a/src/barril/units/_tests/test_posc2.py
+++ b/src/barril/units/_tests/test_posc2.py
@@ -1,4 +1,3 @@
-
 import pytest
 from pytest import approx
 
diff --git a/src/barril/units/_tests/test_posc_additional_units.py b/src/barril/units/_tests/test_posc_additional_units.py
index 003b4ff..2162317 100644
--- a/src/barril/units/_tests/test_posc_additional_units.py
+++ b/src/barril/units/_tests/test_posc_additional_units.py
@@ -1,4 +1,3 @@
-
 import pytest
 from pytest import approx
 
diff --git a/src/barril/units/_tests/test_scalar.py b/src/barril/units/_tests/test_scalar.py
index a98851e..07074bc 100644
--- a/src/barril/units/_tests/test_scalar.py
+++ b/src/barril/units/_tests/test_scalar.py
@@ -6,7 +6,13 @@
 from barril import units
 from barril._foundation.odict import odict
 from barril.units import (
-    ChangeScalars, InvalidOperationError, InvalidUnitError, ObtainQuantity, Quantity, Scalar)
+    ChangeScalars,
+    InvalidOperationError,
+    InvalidUnitError,
+    ObtainQuantity,
+    Quantity,
+    Scalar,
+)
 from pytest import approx
 
 
@@ -596,7 +602,6 @@ def testScalarHashEq():
 
 
 def testChangeScalars():
-
     class Fluid:
         density = Scalar(0, "lbm/galUS")
         concentration = Scalar(0, "%")
diff --git a/src/barril/units/_tests/test_unit_database.py b/src/barril/units/_tests/test_unit_database.py
index e06efdb..0c94397 100644
--- a/src/barril/units/_tests/test_unit_database.py
+++ b/src/barril/units/_tests/test_unit_database.py
@@ -1,4 +1,3 @@
-
 import pytest
 from pytest import approx