https://bugs.kde.org/show_bug.cgi?id=399533
Bug ID: 399533
Summary: No support for deconstructing tuple in 'with'
statement
Product: kdev-python
Version: 5.2.4
Platform: Debian testing
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Language support
Assignee: m...@svenbrauch.de
Reporter: nicolas.alva...@gmail.com
Target Milestone: ---
PEP 343 introduces the 'with' statement, and says this about the 'as' clause:
"with EXPR as VAR:
Here, 'with' and 'as' are new keywords; EXPR is an arbitrary expression (but
not an expression-list) and VAR is a single assignment target. It can not be a
comma-separated sequence of variables, but it can be a parenthesized
comma-separated sequence of variables."
This means the context manager's __enter__ method can return a sequence with
multiple elements, and you can deconstruct the sequence by putting a
"parenthesized comma-separated sequence of variables" in the 'as' clause:
class Mgr:
def __enter__(self):
return ('two', 'elements')
def __exit__(self, *args):
pass
with Mgr() as (foo, bar):
print(foo)
print(bar)
However, kdev-python doesn't support this. 'foo' and 'bar' will both appear as
undefined variables, underlined as errors.
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