Update swap_case.py

Author: cclauss

strings/swap_case.py

@@ -24,19 +24,17 @@ def swap_case(sentence):
     >>> swap_case('Algorithm.Python@89')
     aLGORITHM.pYTHON@89
     """
-    newstring = ''
+    new_string = ''
     for char in sentence:
         if char.isupper() == True:
-            newstring += char.lower()
+            new_string += char.lower()
         if char.islower() == True:
-            newstring += char.upper()
+            new_string += char.upper()
         if regexp.search(char):
-            newstring += char
+            new_string += char
 
-    return newstring
+    return new_string
 
 
 if __name__ == '__main__':
-    s = input("Please input sentence:")
-    result = swap_case(s)
-    print(result)
+    print(swap_case(input("Please input sentence:")))