diff --git a/LeetCode/0020_Valid_Parentheses.py b/LeetCode/0020_Valid_Parentheses.py
new file mode 100644
index 0000000..e2e41c5
--- /dev/null
+++ b/LeetCode/0020_Valid_Parentheses.py
@@ -0,0 +1,16 @@
+class Solution:
+    def isValid(self, s: str) -> bool:
+        stack = []
+        openbrackets = ('(', '[', '{')
+        matches = ('()', '[]', '{}')
+
+        for c in s:
+            if c in openbrackets:
+                stack.append(c)
+            else:
+                if len(stack) < 1 or stack[-1] + c not in matches:
+                    return False
+
+                stack.pop()
+
+        return len(stack) == 0
\ No newline at end of file