更新 'tt.py'

tt.py

         e = '%s%s%s'%(c,a,d)
         S.append(eval(e))
         return f(i+1,s,S)
+
+x = raw_input()
+s = ""
+while x != '=\n':
+    s += x
+    x = raw_input() + '\n'
+
+print f(0,toList(s))