View difference between Paste ID: 64iEMQmd and 1nWnr8RS

 op_order = ['+', '-', '/', '*']
-    t = s.rsplit('+', 1)
+
-    if len(t) > 1:
+
-        return add(t[0], t[1])
+
     for op in op_order:
-    t = s.rsplit('-', 1)
+        t = s.rsplit(op, 1)
-    if len(t) > 1:
+        if len(t) == 2:
-        return subtract(t[0], t[1])
+            return ops[op](t[0], t[1])
     return int(s)
-    t = s.rsplit('/', 1)
+
-    if len(t) > 1:
+
-        return divide(t[0], t[1])
+
     return evaluate(l) / evaluate(r)
-    t = s.rsplit('*', 1)
+
-    if len(t) > 1:
+
-        return multiply(t[0], t[1])
+
     return evaluate(l) * evaluate(r)
 
 
 def add(l, r):
     return evaluate(l) + evaluate(r)
 
 
 def subtract(l, r):
     return evaluate(l) - evaluate(r)
 
 
 ops = {
     '+': add,
     '-': subtract,
     '/': divide,
     '*': multiply,
 }