LGTM.

These look like intentionally deferred imports. Perhaps remove the module-level import?

When I originally wrote my change, the use of textwrap in _introdoc() was the only instance in the pydoc module. So, I decided to do it at the function level. Now that the module is used in two different places, doing the module level import is okay, I think. Importing pydoc should not really be performance sensitive anyhow, should it? I think it would be fine to do it either way (module level or function level).