From d923f987d1b2fc6b33010708aa1a93eb39433a21 Mon Sep 17 00:00:00 2001 From: Benjamin Peterson Date: Sat, 8 Nov 2008 16:55:33 +0000 Subject: [PATCH] a few compile() and ast doc improvements --- Doc/library/ast.rst | 11 +++++------ Doc/library/functions.rst | 19 ++++++++++--------- 2 files changed, 15 insertions(+), 15 deletions(-) diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst index 2192d11f865..e1a8ac09347 100644 --- a/Doc/library/ast.rst +++ b/Doc/library/ast.rst @@ -21,13 +21,12 @@ 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 ------------ @@ -126,7 +125,7 @@ and classes for traversing abstract syntax trees: .. function:: parse(expr, filename='', 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) diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst index 78d2ad1203f..30dca9077d3 100644 --- a/Doc/library/functions.rst +++ b/Doc/library/functions.rst @@ -199,15 +199,8 @@ available. They are listed here in alphabetical order. 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 compile into and from AST - objects. - - When compiling a string with multi-line statements, two caveats apply: 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 the string :meth:`replace` method to - change them into ``'\n'``. + *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 (``''`` is @@ -237,6 +230,14 @@ 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'``. + .. versionadded:: 2.6 Support for compiling AST objects.