fixing get_total_rows to correctly fetch the table data and not get l…

…ist index out of range errors (mariostoev#163)

finviz/helper_functions/scraper_functions.py

@@ -42,13 +42,15 @@ def get_total_rows(page_content):
     """ Returns the total number of rows(results). """
 
     total_element = page_content.cssselect('td[width="128"]')
-    total_number = (
-        etree.tostring(total_element[0]).decode("utf-8").split("</b>")[1].split()[0]
-    )
-
-    try:
-        return int(total_number)
-    except ValueError:
+    if len(total_element) > 0:
+        content = etree.tostring(total_element[0]).decode("utf-8")
+        total_number = content.split("/")[1].split()[0]
+
+        try:
+            return int(total_number)
+        except ValueError:
+            return 0
+    else:
         return 0