.. _invalid-envvar-default:

invalid-envvar-default / W1508
==============================

**Message emitted:**

%s default type is %s. Expected str or None.

**Description:**

*Env manipulation functions return None or str values. Supplying anything different as a default may cause bugs. See https://docs.python.org/3/library/os.html#os.getenv.*






Created by ``stdlib`` checker