fixed py formatting

fixed py formatting

solutions/hex_to_binary.py

@@ -1,13 +1,14 @@
 """
-hex_to_binary.py
-
 This module provides a utility function to convert a hexadecimal string
 to its binary representation.
 
 Functions:
 - hex_to_binary: Converts a hexadecimal string to its binary equivalent.
+
+Author: Marc Darazi
 """
 
+
 def hex_to_binary(hex_string):
     """
     Convert a hexadecimal string to its binary representation.
@@ -28,11 +29,13 @@ def hex_to_binary(hex_string):
         '11010'
         >>> hex_to_binary("0xFF")
         '11111111'
+        >>> hex_to_binary("0x0")
+        '0'
     """
     # Remove '0x' prefix if present
     if hex_string.startswith("0x"):
         hex_string = hex_string[2:]
-    
+
     try:
         # Convert to integer, then to binary
         binary_string = bin(int(hex_string, 16))[2:]  # Remove '0b' prefix

solutions/tests/test_hex_to_binary.py

@@ -1,6 +1,17 @@
+"""
+This module provides a utility function to convert a hexadecimal string
+to its binary representation.
+
+Functions:
+- hex_to_binary: Converts a hexadecimal string to its binary equivalent.
+
+Author: Marc Darazi
+"""
+
 import unittest
 from hex_to_binary import hex_to_binary
 
+
 class TestHexToBinary(unittest.TestCase):
     """
     Unit tests for the hex_to_binary function.
@@ -9,44 +20,41 @@ class TestHexToBinary(unittest.TestCase):
     hexadecimal strings to binary strings, handling both cases with and
     without the '0x' prefix and invalid inputs.
     """
-    
+
     def test_valid_hex_without_prefix(self):
         """
         Test converting a valid hexadecimal string without the '0x' prefix.
         """
         self.assertEqual(hex_to_binary("1A"), "11010")
-        
+
     def test_valid_hex_with_prefix(self):
         """
         Test converting a valid hexadecimal string with the '0x' prefix.
         """
         self.assertEqual(hex_to_binary("0xFF"), "11111111")
-        
+
     def test_single_digit_hex(self):
         """
         Test converting a single digit hexadecimal string.
         """
         self.assertEqual(hex_to_binary("9"), "1001")
-        
+
     def test_hex_with_lowercase_letters(self):
         """
         Test converting a hexadecimal string with lowercase letters.
         """
         self.assertEqual(hex_to_binary("a"), "1010")
-        
+
     def test_invalid_hex_with_non_hex_characters(self):
         """
         Test an invalid hexadecimal string with non-hex characters.
         """
         with self.assertRaises(ValueError):
             hex_to_binary("G1")
-            
+
     def test_empty_string(self):
         """
         Test an empty string as input, which should raise a ValueError.
         """
         with self.assertRaises(ValueError):
             hex_to_binary("")
-
-if __name__ == "_main_":
-    unittest.main()