[IMP] using with statement

account_statement_base_import/parser/file_parser.py

@@ -131,17 +131,13 @@ class FileParser(BankStatementImportParser):
         wb_file.write(self.filebuffer)
         # We ensure that cursor is at beginig of file
         wb_file.seek(0)
-        wb = xlrd.open_workbook(wb_file.name)
+        with xlrd.open_workbook(wb_file.name) as wb:
             self._datemode = wb.datemode
             sheet = wb.sheet_by_index(0)
             header = sheet.row_values(0)
             res = []
             for rownum in range(1, sheet.nrows):
                 res.append(dict(zip(header, sheet.row_values(rownum))))
-        try:
-            wb_file.close()
-        except Exception, e:
-            pass  # file is already closed
         return res
 
     def _from_csv(self, result_set, conversion_rules):