ansible/ansible — pull request #8166 by scottbrown (2014-07-16 15:52:50+00:00)
Title: Fixing improperly closed file handle in ansible vault

The parentheses are left off the call, telling Python to return a method but not call the method. You can see how this works in a REPL by calling ``close`` with and without the parentheses, noting how the file object changes.

```python
>>> f = open("/etc/passwd", "rb")
>>> f

>>> f.close

>>> f

>>> f.close()
>>> f

```