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  r67162 | benjamin.peterson | 2008-11-08 10:55:33 -0600 (Sat, 08 Nov 2008) | 1 line

  a few compile() and ast doc improvements
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This commit is contained in:
Benjamin Peterson 2008-11-08 17:05:00 +00:00
parent beef207ad0
commit ec9199be08
2 changed files with 26 additions and 20 deletions

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@ -15,13 +15,12 @@ abstract syntax grammar. The abstract syntax itself might change with each
Python release; this module helps to find out programmatically what the current
grammar looks like.
An abstract syntax tree can be generated by passing :data:`_ast.PyCF_ONLY_AST`
as a flag to the :func:`compile` builtin function, or using the :func:`parse`
An abstract syntax tree can be generated by passing :data:`ast.PyCF_ONLY_AST` as
a flag to the :func:`compile` builtin function, or using the :func:`parse`
helper provided in this module. The result will be a tree of objects whose
classes all inherit from :class:`ast.AST`.
classes all inherit from :class:`ast.AST`. An abstract syntax tree can be
compiled into a Python code object using the built-in :func:`compile` function.
A modified abstract syntax tree can be compiled into a Python code object using
the built-in :func:`compile` function.
Node classes
------------
@ -113,7 +112,7 @@ and classes for traversing abstract syntax trees:
.. function:: parse(expr, filename='<unknown>', mode='exec')
Parse an expression into an AST node. Equivalent to ``compile(expr,
filename, mode, PyCF_ONLY_AST)``.
filename, mode, ast.PyCF_ONLY_AST)``.
.. function:: literal_eval(node_or_string)

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@ -199,21 +199,20 @@ are always available. They are listed here in alphabetical order.
.. function:: compile(source, filename, mode[, flags[, dont_inherit]])
Compile the *source* into a code object or AST object. Code objects can be
executed by a call to :func:`exec` or evaluated by a call to
:func:`eval`. *source* can either be a string or an AST object. Refer to the
:mod:`_ast` module documentation for information on how to compile into and
from AST objects.
Compile the *source* into a code or AST object. Code objects can be executed
by an :keyword:`exec` statement or evaluated by a call to :func:`eval`.
*source* can either be a string or an AST object. Refer to the :mod:`ast`
module documentation for information on how to work with AST objects.
The *filename* argument should give the file from
which the code was read; pass some recognizable value if it wasn't
read from a file (``'<string>'`` is commonly used). The *mode*
argument specifies what kind of code must be compiled; it can be
``'exec'`` if *source* consists of a sequence of statements,
``'eval'`` if it consists of a single expression, or ``'single'``
if it consists of a single interactive statement (in the latter
case, expression statements that evaluate to something else than
``None`` will be printed).
The *filename* argument should give the file from which the code was read;
pass some recognizable value if it wasn't read from a file (``'<string>'`` is
commonly used).
The *mode* argument specifies what kind of code must be compiled; it can be
``'exec'`` if *source* consists of a sequence of statements, ``'eval'`` if it
consists of a single expression, or ``'single'`` if it consists of a single
interactive statement (in the latter case, expression statements that
evaluate to something else than ``None`` will be printed).
The optional arguments *flags* and *dont_inherit* control which future
statements (see :pep:`236`) affect the compilation of *source*. If neither
@ -233,6 +232,14 @@ are always available. They are listed here in alphabetical order.
This function raises :exc:`SyntaxError` if the compiled source is invalid,
and :exc:`TypeError` if the source contains null bytes.
.. note::
When compiling a string with multi-line statements, line endings must be
represented by a single newline character (``'\n'``), and the input must
be terminated by at least one newline character. If line endings are
represented by ``'\r\n'``, use :meth:`str.replace` to change them into
``'\n'``.
.. function:: complex([real[, imag]])