diff --git a/quinn/dataframe_validator.py b/quinn/dataframe_validator.py
index f4b8e8c..8867091 100644
--- a/quinn/dataframe_validator.py
+++ b/quinn/dataframe_validator.py
@@ -35,7 +35,6 @@ class DataFrameProhibitedColumnError(ValueError):
 
 def validate_presence_of_columns(df: DataFrame, required_col_names: list[str], return_bool: bool = False) -> Union[None, bool]:
     """Validate the presence of column names in a DataFrame.
-
     :param df: A spark DataFrame.
     :type df: DataFrame
     :param required_col_names: List of the required column names for the DataFrame.
@@ -48,13 +47,13 @@ def validate_presence_of_columns(df: DataFrame, required_col_names: list[str], r
     """
     all_col_names = df.columns
     missing_col_names = [x for x in required_col_names if x not in all_col_names]
-    
+
     if missing_col_names:
         error_message = f"The {missing_col_names} columns are not included in the DataFrame with the following columns {all_col_names}"
         if return_bool:
             return False
         raise DataFrameMissingColumnError(error_message)
-    
+
     return True if return_bool else None
 
 
@@ -65,7 +64,6 @@ def validate_schema(
     return_bool: bool = False,
 ) -> Union[None, bool]:
     """Function that validate if a given DataFrame has a given StructType as its schema.
-
     :param df: DataFrame to validate
     :type df: DataFrame
     :param required_schema: StructType required for the DataFrame
@@ -90,19 +88,20 @@ def validate_schema(
             x.nullable = None
 
     missing_struct_fields = [x for x in _required_schema if x not in _all_struct_fields]
-    
+
     if missing_struct_fields:
-        error_message = f"The {missing_struct_fields} StructFields are not included in the DataFrame with the following StructFields {_all_struct_fields}"
+        error_message = (
+            f"The {missing_struct_fields} StructFields are not included in the DataFrame with the following StructFields {_all_struct_fields}"
+        )
         if return_bool:
             return False
         raise DataFrameMissingStructFieldError(error_message)
-    
+
     return True if return_bool else None
 
 
 def validate_absence_of_columns(df: DataFrame, prohibited_col_names: list[str], return_bool: bool = False) -> Union[None, bool]:
     """Validate that none of the prohibited column names are present among specified DataFrame columns.
-
     :param df: DataFrame containing columns to be checked.
     :param prohibited_col_names: List of prohibited column names.
     :param return_bool: If True, return a boolean instead of raising an exception.
@@ -113,11 +112,11 @@ def validate_absence_of_columns(df: DataFrame, prohibited_col_names: list[str],
     """
     all_col_names = df.columns
     extra_col_names = [x for x in all_col_names if x in prohibited_col_names]
-    
+
     if extra_col_names:
         error_message = f"The {extra_col_names} columns are not allowed to be included in the DataFrame with the following columns {all_col_names}"
         if return_bool:
             return False
         raise DataFrameProhibitedColumnError(error_message)
-    
-    return True if return_bool else None
\ No newline at end of file
+
+    return True if return_bool else None
diff --git a/tests/test_dataframe_validator.py b/tests/test_dataframe_validator.py
index b99e3c7..4debd01 100644
--- a/tests/test_dataframe_validator.py
+++ b/tests/test_dataframe_validator.py
@@ -1,7 +1,6 @@
 import pytest
 from pyspark.sql.types import StructType, StructField, StringType, LongType
 import semver
-
 import quinn
 from .spark import spark
 
@@ -21,7 +20,7 @@ def it_does_nothing_if_all_required_columns_are_present_and_return_bool_is_false
         data = [("jose", 1), ("li", 2), ("luisa", 3)]
         source_df = spark.createDataFrame(data, ["name", "age"])
         quinn.validate_presence_of_columns(source_df, ["name"], False)
-        
+
     def it_returns_false_if_a_required_column_is_missing_and_return_bool_is_true():
         data = [("jose", 1), ("li", 2), ("luisa", 3)]
         source_df = spark.createDataFrame(data, ["name", "age"])
@@ -66,7 +65,7 @@ def it_does_nothing_when_the_schema_matches_and_return_bool_is_false():
             ]
         )
         quinn.validate_schema(source_df, required_schema, return_bool = False)
-        
+
     def it_returns_false_when_struct_field_is_missing_and_return_bool_is_true():
         data = [("jose", 1), ("li", 2), ("luisa", 3)]
         source_df = spark.createDataFrame(data, ["name", "age"])
@@ -118,7 +117,7 @@ def it_does_nothing_when_no_unallowed_columns_are_present_and_return_bool_is_fal
         data = [("jose", 1), ("li", 2), ("luisa", 3)]
         source_df = spark.createDataFrame(data, ["name", "age"])
         quinn.validate_absence_of_columns(source_df, ["favorite_color"], False)
-        
+
     def it_returns_false_when_a_unallowed_column_is_present_and_return_bool_is_true():
         data = [("jose", 1), ("li", 2), ("luisa", 3)]
         source_df = spark.createDataFrame(data, ["name", "age"])