Initial patch by Hans Lawrenz.

Patch by Johannes Ebke.

Thanks to Ville Skyttä for the patch.

attributes.

attributes.

new exception with setting current exception as __cause__.

_PyErr_FormatFromCause(exception, format, args...) is equivalent to Python

    raise exception(format % args) from sys.exc_info()[1]

new exception with setting current exception as __cause__.

_PyErr_FormatFromCause(exception, format, args...) is equivalent to Python

    raise exception(format % args) from sys.exc_info()[1]

Patch by Mariatta Wijaya.

Patch by Mariatta Wijaya.

C99 inline semantics don't work everywhere. (https://bugs.python.org/issue28092)
We don't want these to have external visibility anyway.

Thanks to Stéphane Wirtel!