Create python code for roman to integer

Roman_number_to_integer/code.py

@@ -0,0 +1,27 @@
+class Solution(object):
+    def romanToInt(self, s):
+        """
+        :type s: str
+        :rtype: int
+        """
+
+        roman_to_int = {
+            "I": 1,
+            "V": 5,
+            "X": 10,
+            "L": 50,
+            "C": 100,
+            "D": 500,
+            "M": 1000
+        }
+
+        num = 0
+        for i in range(len(s) - 1):
+            # Check if the current value is less than the next
+            if roman_to_int[s[i]] < roman_to_int[s[i + 1]]:
+                # If IV, then it's 5 - 1, which is 4
+                num -= roman_to_int[s[i]]
+            else:
+                num += roman_to_int[s[i]]
+
+        return num + roman_to_int[s[-1]]