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Diffstat (limited to 'Doc/whatsnew/3.3.rst')
| -rw-r--r-- | Doc/whatsnew/3.3.rst | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst index 0b0f8f6..07257f0 100644 --- a/Doc/whatsnew/3.3.rst +++ b/Doc/whatsnew/3.3.rst @@ -195,6 +195,22 @@ inspection of exception attributes:: print("You are not allowed to read document.txt") +PEP 380: Syntax for Delegating to a Subgenerator +================================================ + +PEP 380 adds the ``yield from`` expression, allowing a generator to delegate +part of its operations to another generator. This allows a section of code +containing 'yield' to be factored out and placed in another generator. +Additionally, the subgenerator is allowed to return with a value, and the +value is made available to the delegating generator. +While designed primarily for use in delegating to a subgenerator, the ``yield +from`` expression actually allows delegation to arbitrary subiterators. + +(Implementation by Greg Ewing, integrated into 3.3 by Renaud Blanch, Ryan +Kelly and Nick Coghlan, documentation by Zbigniew Jędrzejewski-Szmek and +Nick Coghlan) + + PEP 3155: Qualified name for classes and functions ================================================== @@ -208,7 +224,6 @@ it provides better information about where they were actually defined, and how they might be accessible from the global scope. Example with (non-bound) methods:: - >>> class C: ... def meth(self): ... pass |