mirror of https://github.com/python/cpython
gh-115986 Improve pprint docs formatting (GH-117401)
* Move pprinter parameters description to the table The change improves readability. Suggested in the GH#116085 PR discussion. * Make pprint doc with params markup * Fix formatting Indentation of code blocks made them nested "Version changed" is better placed after the code block * Fix formatting for tests * fix code indentation for autotests * Fix identation for autotests * Remove duplication of the parameters' description * Rearrange parameters description in a correct order --------- Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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Kerim Kabirov
GitHub
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@ -35,13 +35,55 @@ Dictionaries are sorted by key before the display is computed.
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Functions
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---------
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.. function:: pp(object, *args, sort_dicts=False, **kwargs)
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.. function:: pp(object, stream=None, indent=1, width=80, depth=None, *, \
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compact=False, sort_dicts=False, underscore_numbers=False)
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Prints the formatted representation of *object* followed by a newline.
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If *sort_dicts* is false (the default), dictionaries will be displayed with
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their keys in insertion order, otherwise the dict keys will be sorted.
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*args* and *kwargs* will be passed to :func:`~pprint.pprint` as formatting
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parameters.
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Prints the formatted representation of *object*, followed by a newline.
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This function may be used in the interactive interpreter
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instead of the :func:`print` function for inspecting values.
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Tip: you can reassign ``print = pprint.pp`` for use within a scope.
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:param object:
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The object to be printed.
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:param stream:
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A file-like object to which the output will be written
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by calling its :meth:`!write` method.
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If ``None`` (the default), :data:`sys.stdout` is used.
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:type stream: :term:`file-like object` | None
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:param int indent:
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The amount of indentation added for each nesting level.
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:param int width:
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The desired maximum number of characters per line in the output.
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If a structure cannot be formatted within the width constraint,
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a best effort will be made.
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:param depth:
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The number of nesting levels which may be printed.
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If the data structure being printed is too deep,
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the next contained level is replaced by ``...``.
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If ``None`` (the default), there is no constraint
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on the depth of the objects being formatted.
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:type depth: int | None
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:param bool compact:
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Control the way long :term:`sequences <sequence>` are formatted.
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If ``False`` (the default),
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each item of a sequence will be formatted on a separate line,
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otherwise as many items as will fit within the *width*
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will be formatted on each output line.
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:param bool sort_dicts:
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If ``True``, dictionaries will be formatted with
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their keys sorted, otherwise
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they will be displayed in insertion order (the default).
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:param bool underscore_numbers:
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If ``True``,
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integers will be formatted with the ``_`` character for a thousands separator,
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otherwise underscores are not displayed (the default).
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>>> import pprint
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>>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
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@ -60,19 +102,10 @@ Functions
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.. function:: pprint(object, stream=None, indent=1, width=80, depth=None, *, \
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compact=False, sort_dicts=True, underscore_numbers=False)
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Prints the formatted representation of *object* on *stream*, followed by a
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newline. If *stream* is ``None``, :data:`sys.stdout` is used. This may be used
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in the interactive interpreter instead of the :func:`print` function for
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inspecting values (you can even reassign ``print = pprint.pprint`` for use
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within a scope).
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Alias for :func:`~pprint.pp` with *sort_dicts* set to ``True`` by default,
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which would automatically sort the dictionaries' keys,
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you might want to use :func:`~pprint.pp` instead where it is ``False`` by default.
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The configuration parameters *stream*, *indent*, *width*, *depth*,
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*compact*, *sort_dicts* and *underscore_numbers* are passed to the
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:class:`PrettyPrinter` constructor and their meanings are as
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described in its documentation below.
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Note that *sort_dicts* is ``True`` by default and you might want to use
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:func:`~pprint.pp` instead where it is ``False`` by default.
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.. function:: pformat(object, indent=1, width=80, depth=None, *, \
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compact=False, sort_dicts=True, underscore_numbers=False)
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@ -80,7 +113,7 @@ Functions
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Return the formatted representation of *object* as a string. *indent*,
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*width*, *depth*, *compact*, *sort_dicts* and *underscore_numbers* are
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passed to the :class:`PrettyPrinter` constructor as formatting parameters
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and their meanings are as described in its documentation below.
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and their meanings are as described in the documentation above.
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.. function:: isreadable(object)
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@ -119,63 +152,15 @@ Functions
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PrettyPrinter Objects
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---------------------
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This module defines one class:
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.. First the implementation class:
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.. index:: single: ...; placeholder
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.. class:: PrettyPrinter(indent=1, width=80, depth=None, stream=None, *, \
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compact=False, sort_dicts=True, underscore_numbers=False)
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Construct a :class:`PrettyPrinter` instance. This constructor understands
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several keyword parameters.
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Construct a :class:`PrettyPrinter` instance.
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*stream* (default :data:`!sys.stdout`) is a :term:`file-like object` to
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which the output will be written by calling its :meth:`!write` method.
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If both *stream* and :data:`!sys.stdout` are ``None``, then
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:meth:`~PrettyPrinter.pprint` silently returns.
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Other values configure the manner in which nesting of complex data
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structures is displayed.
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*indent* (default 1) specifies the amount of indentation added for
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each nesting level.
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*depth* controls the number of nesting levels which may be printed; if
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the data structure being printed is too deep, the next contained level
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is replaced by ``...``. By default, there is no constraint on the
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depth of the objects being formatted.
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*width* (default 80) specifies the desired maximum number of characters per
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line in the output. If a structure cannot be formatted within the width
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constraint, a best effort will be made.
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*compact* impacts the way that long sequences (lists, tuples, sets, etc)
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are formatted. If *compact* is false (the default) then each item of a
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sequence will be formatted on a separate line. If *compact* is true, as
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many items as will fit within the *width* will be formatted on each output
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line.
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If *sort_dicts* is true (the default), dictionaries will be formatted with
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their keys sorted, otherwise they will display in insertion order.
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If *underscore_numbers* is true, integers will be formatted with the
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``_`` character for a thousands separator, otherwise underscores are not
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displayed (the default).
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.. versionchanged:: 3.4
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Added the *compact* parameter.
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.. versionchanged:: 3.8
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Added the *sort_dicts* parameter.
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.. versionchanged:: 3.10
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Added the *underscore_numbers* parameter.
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.. versionchanged:: 3.11
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No longer attempts to write to :data:`!sys.stdout` if it is ``None``.
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Arguments have the same meaning as for :func:`~pprint.pp`.
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Note that they are in a different order, and that *sort_dicts* defaults to ``True``.
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>>> import pprint
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>>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
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@ -201,6 +186,19 @@ This module defines one class:
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('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead', (...)))))))
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.. versionchanged:: 3.4
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Added the *compact* parameter.
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.. versionchanged:: 3.8
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Added the *sort_dicts* parameter.
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.. versionchanged:: 3.10
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Added the *underscore_numbers* parameter.
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.. versionchanged:: 3.11
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No longer attempts to write to :data:`!sys.stdout` if it is ``None``.
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:class:`PrettyPrinter` instances have the following methods:
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