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ansible/docs/docsite/rst/dev_guide/testing/sanity/no-main-display.rst

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no-main-display
===============
As of Ansible 2.8, ``Display`` should no longer be imported from ``__main__``.
``Display`` is now a singleton and should be utilized like the following::
from ansible.utils.display import Display
display = Display()
There is no longer a need to attempt ``from __main__ import display`` inside
a ``try/except`` block.