Update solution.py

iKostanOrg · Dec 1, 2024 · be39032 · be39032
1 parent c9dba87
commit be39032
Showing 1 changed file with 7 additions and 7 deletions.
diff --git a/kyu_7/valid_parentheses/solution.py b/kyu_7/valid_parentheses/solution.py
@@ -19,18 +19,18 @@ def valid_parentheses(paren_str: str) -> bool:
         return False
 
     # convert string into list
-    paren_str = list(char for char in paren_str)
+    paren_str_list: list = list(paren_str)
 
-    while paren_str:
+    while paren_str_list:
         # Fail if starts from closing bracket
-        if paren_str[0] == ')':
+        if paren_str_list[0] == ')':
             return False
         # Find matching pair and remove them from the string
-        for i in range(1, len(paren_str)):
-            if paren_str[i] == ')':
+        for i in range(1, len(paren_str_list)):
+            if paren_str_list[i] == ')':
                 # delete a matching pair
-                del paren_str[i]
-                del paren_str[0]
+                del paren_str_list[i]
+                del paren_str_list[0]
                 # start all over again
                 break