diff options
Diffstat (limited to 'Doc/reference/expressions.rst')
| -rw-r--r-- | Doc/reference/expressions.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst index 7da54a2..9746162 100644 --- a/Doc/reference/expressions.rst +++ b/Doc/reference/expressions.rst @@ -355,7 +355,7 @@ resumed before it is finalized (by reaching a zero reference count or by being garbage collected), the generator-iterator's :meth:`close` method will be called, allowing any pending :keyword:`finally` clauses to execute. -When ``yield from expression`` is used, it treats the supplied expression as +When ``yield from <expr>`` is used, it treats the supplied expression as a subiterator. All values produced by that subiterator are passed directly to the caller of the current generator's methods. Any values passed in with :meth:`send` and any exceptions passed in with :meth:`throw` are passed to @@ -369,6 +369,9 @@ the yield expression. It can be either set explicitly when raising :exc:`StopIteration`, or automatically when the sub-iterator is a generator (by returning a value from the sub-generator). + .. versionchanged:: 3.3 + Added ``yield from <expr>`` to delegate control flow to a subiterator + The parentheses can be omitted when the :keyword:`yield` expression is the sole expression on the right hand side of an assignment statement. |