diff --git a/first-non-repeating.py b/first-non-repeating.py
new file mode 100644
index 0000000..8c3c8d6
--- /dev/null
+++ b/first-non-repeating.py
@@ -0,0 +1,13 @@
+class Solution:
+    def firstUniqChar(self, s: str) -> int:
+        chars = {}
+        for j,char in enumerate(s):
+            if char in chars:
+                chars[char][0] = -1
+            else:
+                chars[char] = [1,j]
+        
+        for ch in chars:
+            if chars[ch][0] == 1:
+                return chars[ch][1]
+        return -1