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| author | Thomas Wouters <thomas@python.org> | 2006-02-28 16:09:29 (GMT) |
|---|---|---|
| committer | Thomas Wouters <thomas@python.org> | 2006-02-28 16:09:29 (GMT) |
| commit | f7f438ba3b05eb4356e7511401686b07d9dfb6d8 (patch) | |
| tree | 94010633418aaf2ea19c609139f9499bf57a1058 /Lib/__future__.py | |
| parent | d3188639c32a086e9149b92d875c45408bd8b81c (diff) | |
| download | cpython-f7f438ba3b05eb4356e7511401686b07d9dfb6d8.zip cpython-f7f438ba3b05eb4356e7511401686b07d9dfb6d8.tar.gz cpython-f7f438ba3b05eb4356e7511401686b07d9dfb6d8.tar.bz2 | |
SF patch #1438387, PEP 328: relative and absolute imports.
- IMPORT_NAME takes an extra argument from the stack: the relativeness of
the import. Only passed to __import__ when it's not -1.
- __import__() takes an optional 5th argument for the same thing; it
__defaults to -1 (old semantics: try relative, then absolute)
- 'from . import name' imports name (be it module or regular attribute)
from the current module's *package*. Likewise, 'from .module import name'
will import name from a sibling to the current module.
- Importing from outside a package is not allowed; 'from . import sys' in a
toplevel module will not work, nor will 'from .. import sys' in a
(single-level) package.
- 'from __future__ import absolute_import' will turn on the new semantics
for import and from-import: imports will be absolute, except for
from-import with dots.
Includes tests for regular imports and importhooks, parser changes and a
NEWS item, but no compiler-package changes or documentation changes.
Diffstat (limited to 'Lib/__future__.py')
| -rw-r--r-- | Lib/__future__.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/__future__.py b/Lib/__future__.py index fc47459..e49c663 100644 --- a/Lib/__future__.py +++ b/Lib/__future__.py @@ -51,6 +51,7 @@ all_feature_names = [ "nested_scopes", "generators", "division", + "absolute_import", ] __all__ = ["all_feature_names"] + all_feature_names @@ -62,6 +63,7 @@ __all__ = ["all_feature_names"] + all_feature_names CO_NESTED = 0x0010 # nested_scopes CO_GENERATOR_ALLOWED = 0 # generators (obsolete, was 0x1000) CO_FUTURE_DIVISION = 0x2000 # division +CO_FUTURE_ABSIMPORT = 0x4000 # absolute_import class _Feature: def __init__(self, optionalRelease, mandatoryRelease, compiler_flag): @@ -102,3 +104,7 @@ generators = _Feature((2, 2, 0, "alpha", 1), division = _Feature((2, 2, 0, "alpha", 2), (3, 0, 0, "alpha", 0), CO_FUTURE_DIVISION) + +absolute_import = _Feature((2, 5, 0, "alpha", 1), + (2, 7, 0, "alpha", 0), + CO_FUTURE_ABSIMPORT) |