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28 changes: 19 additions & 9 deletions Doc/reference/executionmodel.rst
Original file line number Diff line number Diff line change
Expand Up @@ -56,15 +56,25 @@ Binding of names

.. index:: single: from; import statement

The following constructs bind names: formal parameters to functions,
:keyword:`import` statements, class and function definitions (these bind the
class or function name in the defining block), and targets that are identifiers
if occurring in an assignment, :keyword:`for` loop header, or after
:keyword:`!as` in a :keyword:`with` statement or :keyword:`except` clause.
The :keyword:`!import` statement
of the form ``from ... import *`` binds all names defined in the imported
module, except those beginning with an underscore. This form may only be used
at the module level.
The following constructs bind names:

* formal parameters to functions,
* class definitions,
* function definitions,
* assignment expressions,
* :ref:`targets <assignment>` that are identifiers if occurring in
an assignment:

+ :keyword:`for` loop header,
+ after :keyword:`!as` in a :keyword:`with` statement, :keyword:`except`
clause or in the as-pattern in structural pattern matching,
+ in a capture pattern in structural pattern matching

* :keyword:`import` statements.

The :keyword:`!import` statement of the form ``from ... import *`` binds all
names defined in the imported module, except those beginning with an underscore.
This form may only be used at the module level.

A target occurring in a :keyword:`del` statement is also considered bound for
this purpose (though the actual semantics are to unbind the name).
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