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authorThomas Wouters <thomas@python.org>2000-08-17 22:55:00 (GMT)
committerThomas Wouters <thomas@python.org>2000-08-17 22:55:00 (GMT)
commit5215225ea1e3200b572775639d567f5e3f489a15 (patch)
tree8202d4aebf513dc8c8a80adf018f13270386e658 /Doc/ref/ref6.tex
parent1d75a79c009e500923128716a02efbe86135e64e (diff)
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Apply SF patch #101135, adding 'import module as m' and 'from module import
name as n'. By doing some twists and turns, "as" is not a reserved word. There is a slight change in semantics for 'from module import name' (it will now honour the 'global' keyword) but only in cases that are explicitly undocumented.
Diffstat (limited to 'Doc/ref/ref6.tex')
-rw-r--r--Doc/ref/ref6.tex20
1 files changed, 12 insertions, 8 deletions
diff --git a/Doc/ref/ref6.tex b/Doc/ref/ref6.tex
index dc50c27..008cf1c 100644
--- a/Doc/ref/ref6.tex
+++ b/Doc/ref/ref6.tex
@@ -443,8 +443,9 @@ It continues with the next cycle of the nearest enclosing loop.
\stindex{import}
\begin{verbatim}
-import_stmt: "import" module ("," module)*
- | "from" module "import" identifier ("," identifier)*
+import_stmt: "import" module ["as" name] ("," module ["as" name] )*
+ | "from" module "import" identifier ["as" name]
+ ("," identifier ["as" name] )*
| "from" module "import" "*"
module: (identifier ".")* identifier
\end{verbatim}
@@ -496,13 +497,16 @@ begin.
The first form of \keyword{import} statement binds the module name in the
local namespace to the module object, and then goes on to import the
-next identifier, if any. The \keyword{from} form does not bind the
-module name: it goes through the list of identifiers, looks each one
-of them up in the module found in step (1), and binds the name in the
-local namespace to the object thus found. If a name is not found,
+next identifier, if any. If the module name is followed by \keyword{as},
+the name following \keyword{as} is used as the local name for the module.
+The \keyword{from} form does not bind the module name: it goes through the
+list of identifiers, looks each one of them up in the module found in step
+(1), and binds the name in the local namespace to the object thus found.
+Like with the first form of \keyword{import}, an alternate local name can be
+supplied by specifying "\keyword{as} localname". If a name is not found,
\exception{ImportError} is raised. If the list of identifiers is replaced
-by a star (\samp{*}), all names defined in the module are bound,
-except those beginning with an underscore (\character{_}).
+by a star (\samp{*}), all names defined in the module are bound, except
+those beginning with an underscore (\character{_}).
\indexii{name}{binding}
\exindex{ImportError}