Refactor string_utils & palidrome

Author: rjLelis

palindrome/palindrome.py

@@ -1,9 +1,9 @@
-from string_utils import is_palindrome
+from . import string_utils
 
 
 def main():
     word = input("Type a word to test if it is palindrome: ")
-    if is_palindrome(word):
+    if string_utils.is_palindrome(word):
         print(f"The word '{word}' is palindrome")
     else:
         print(f"The word '{word}' isn't palindrome")

palindrome/string_utils.py

@@ -1,10 +1,15 @@
+
+FORBIDDEN_CHARS = (".", ",", "!", ";", ":",
+        "-", "_", "?", "/", "\\", "|", "*", 
+        "+", "=", "@", "#", "$", "%", "^", 
+        "&", "(", ")", "{", "}", "[", "]", "~", "`")
+
 def remove_special_char(string):
     ''' Removes all special characters from a string '''
-    forbidden_char = (".", ",", "!", ";", ":", "-", "_", "?", "/")
     new_string = ""
-    for s in string:
-        if s not in forbidden_char:
-            new_string += s
+    for character in string:
+        if character not in FORBIDDEN_CHARS:
+            new_string += character
     return new_string