# Sanity Tests » no-basestring

Do not use `isinstance(s, basestring)` as basestring has been removed in Python3. You can import `string_types`, `binary_type`, or `text_type` from `ansible.module_utils.six` and then use `isinstance(s, string_types)` or `isinstance(s, (binary_type, text_type))` instead.

If this is part of code to convert a string to a particular type, `ansible.module_utils._text` contains several functions that may be even better for you: `to_text`, `to_bytes`, and `to_native`.