Version 0.17.1 (in development)

Version 0.17

Drop Python 2 support. Tag Python 3.10 support.

Migrate CI to GitHub actions. Add pypy3 to matrix.

Tests: implement --skip-exe via custom pytest marker.

Documentation: point Anaconda users to conda-forge/python-graphviz.

Move type hints from docstrings to type annotations. Improve doctests.

Examples: standardize import convention and modernize.

Re-render example notebooks with Graphviz 2.46.1.

Version 0.16

Add .unflatten() method to Graph, Digraph, and Source. Add standalone unflatten().

Make Source.__str__() return the .source instead of the repr() (like Graph and Digraph).

Render with dot -K<engine> ... instead of <engine> ... internally (work around upstream issue).

Add documentation hint to archived upstream version for Windows.

Re-render most documentation graphs with Graphviz 2.44.1.

Version 0.15

Graph and Digraph instances created via the context-manager returned by subgraph() now (re)use directory, format, engine, and encoding from the parent instead of using defaults (behavioral change). Note that these attributes are only relevant when rendering the subgraph independently (i.e. as a stand-alone graph) from within the with-block, which was previously underdocumented (PR BMaxV). To reflect that the DOT language does not allow subgraph statements to specify strict (i.e. no way to override the setting of the containing graph), instances created via the context-manager are now strict=None instead of False (so they continue to render stand-alone as non-strict by default).

Drop Python 3.5 support and tag Python 3.9 support.

Add documentation link to new upstream installation procedure for Windows.

Version 0.14.2

Adapt graphviz.version() to support the Graphviz Release version entry format introduced with 2.44.2 (version() is needed to run the tests).

Version 0.14.1

Document the colon-separated node[:port[:compass]] format used for tail and head points in the edge()- and edges()-methods (PR Michał Góral).

Version 0.14

Improve handling of escaped quotes (\"). Different from other layout engine escapes sequences such as \l and \N (which are passed on as is by default), there is no use case for backslash-escaping a literal quote character because escaping of quotes is done by this library. Therefore, a backslash-escaped quote (e.g. in label='\\"') is now treated the same as a plain unescaped quote, i.e. both label='"' and label='\\"' produce the same DOT source [label="\""] (a label that renders as a literal quote). Before this change, use of '\\"' could break the quoting mechanism creating invalid or unintended DOT, possibly leading to syntax errors from the rendering process.

Add notebook section to documentation.

Add sphinx.ext.viewcode to docs (note that this currently lacks links for methods, so that not all of the code is linked; use the source repo for reading on).

Improve test and doc building config.

Version 0.13.2

Fix missing support for four-part versions in graphviz.version().

Version 0.13.1

Tag Python 3.8 support.

Fix quoting for non-ASCII numerals.

Version 0.13

Add explicit support for layout engine escape sequences such as \l and \N. These already worked implicitly before but where broken by backslash escaping in 0.12, which is reverted by this release. Escaping now resembles the stdlib re module: literal backslashes need to be escaped (doubled), which is most conveniently done by using raw string literals for strings that use escape sequences (including escaped backslashes), e.g. label=r'\\'.

Add escape() function (resembling re.escape()) for disabling all meta-characters in a string for rendering.

Use logging in example notebook, add notebooks demonstrating layout engines and escape sequence usage, improve tests with parametrization.

Version 0.12

Fix missing escaping of backslashes, e.g. in labels (pull request DNGros).

Add quiet argument to standalone view() function, and quiet_view argument on .render() and .view() methods. Supresses the stderr output of started viewer processes (unavailable on Windows).

Add basic debug logging via the stdlib logging module.

Reformatted some examples, improved tests by using autospec for mocks.

Version 0.11.1

Include stderr in str() of raised subprocess.CalledProcessError.

Version 0.11

Add quiet argument to .render() and .pipe() methods of Graph, Digraph, and Source objects, allowing to suppress stderr of the layout subprocess (parity with stand-alone render() and pipe() functions).

The rendering process for render() methods and stand-alone function is now started from the directory of the rendered dot source file. This allows to render graph descriptions that use relative paths inline (e.g. for referring to image files to be included) by using paths relative to the source file location. Previously, such relative paths would need to be given relative to the directory from which render() was started, so this change is backwards incompatible for code that relied on the previous behaviour.

Drop Python 3.4 support.

Version 0.10.1

Fix broken renderer argument in pipe() method and function.

Version 0.10

Add format argument to Graph/Digraph.render(). This follows stand-alone render() function and mirrors the Graph/Digraph.pipe() method (usually, format is set on the instance).

Add renderer and formatter arguments to Graph/Digraph.render() and pipe() methods, as well as stand-alone render() and pipe() functions.

Version 0.9

Use sys.stderr to write stderr output from rendering process to stderr (instead of file descriptor inheritance). Ensures stderr is passed in special environments such as IDLE.

Suppress rendering process stdout in render().

Make quiet=True also suppress stderr on success of render() and pipe() (exit-status 0).

Include stderr from rendering process in CalledProcessError exception.

Version 0.8.4

Tag Python 3.7 support (work around subprocess close_fds issue on Windows).

Version 0.8.3

Fix compatibility with python -OO.

Version 0.8.2

Add nohtml() to support labels of the form '<...>' (disabling their default treatment as HTML strings).

Make default 'utf-8' encoding more visible.

Set encoding = locale.getpreferredencoding() when encoding argument/property is set to None explicitly (follow stdlib behaviour).

Version 0.8.1

Add Source.from_file()-classmethod (simpler in-line SVG display of ready-made .gv files within Jupyter).

Drop Python 3.3 support.

Version 0.8

Add clear()-method for Graph and Digraph.

Add grapviz.version() function.

Drop dot source extra indent for edge statements following dotguide examples.

Include LICENSE file in wheel.

Version 0.7.1

Fix TypeError in graphviz.pipe() with invalid dot code under Python 3.

Add copy()-method for Graph, Digraph, and Source.

Add graphviz.render(..., quiet=True).

Fix graphivz.view() exception on unsupported platform.

Raise a dedicated RuntimeError subclass graphviz.ExecutableNotFound when the Graphviz executables are not found.

Port tests from nose/unittest to pytest, extend, use mocks.

Version 0.7

Support setting top-level attrs with g.attr(key=value).

Add context manager usage of subgraph() for adding a subgraph in a with-block.

Add json-based output formats to known FORMATS (Graphviz 2.40+).

Drop extra indent level for DOT source with nonempty graph/node/edge_attr.

Add a final newline to a saved DOT source file if it does not end with one.

Raise subprocess.CalledProcessError on non-zero exit status from rendering.

Raise early when adding a subgraph() with strict=True (avoid DOT syntax error).

Make undocumented quote(), quote_edge(), and attributes() methods private.

Version 0.6

Drop Python 2.6 support (use graphviz<0.6 there).

Improve tests for mkdirs().

Better document adding custom DOT using the body attribute.

Add view()-support for FreeBSD (pull request Julien Gamba).

Version 0.5.2

Add ENGINES and FORMATS to the documented public API.

Version 0.5.1

Fixed PY3 compatibility.

Version 0.5

Add low-level functions render(), pipe(), and view() for directly working with existing files and strings.

Support all render()-arguments in the view()-short-cut-method.

Version 0.4.10

Added 'patchwork' engine.

Version 0.4.9

Add support for strict graphs and digraphs.

Hide render/pipe() subprocess console window on Windows when invoked from non-console process (e.g. from IDLE).

Improve documentation markup/wording.

Make TestNoent more robust.

Version 0.4.8

Make _repr_svg_() available on Source (pull request RafalSkolasinski).

Version 0.4.7

Fixed view()-method on Linux under Python 3 (pull request Antony Lee).

Version 0.4.6

Fixed view()-method on Linux and Darwin (pull request Eric L. Frederich).

Version 0.4.5

Added example for HTML-like labels (

Added Source class for rendering verbatim DOT source code.

Added Python 2.6 support (pull request Jim Crist).

Version 0.4.4

Added the pipe()-method directly returning the stdout of rendering.

Added _repr_svg_() for inline rendering in IPython notebooks.

Version 0.4.3

Added examples generating some of the graphs from the Graphviz Gallery.

Added sphinx-based API documentation.

Version 0.4.2

Added support for HTML-like labels.

Version 0.4.1

Added support for less common output formats. Removed dropped formats ('dia', 'pcl').

Added 'osage' layout engine.

Documented format and engine options in the README.

The view() convenience method now returns the result file name (like render()).

Version 0.4

Added attr() method for inline switching of node/edge attributes.

Added subgraph() method (obsoletes separate Subgraph class).

Add cleanup option to render().

Replaced dry option on render() with separate save() method.

Removed undocumented append() and extend() methods (if needed, the body attribute can be edited directly).

Version 0.3.5

Skip empty comment when creating DOT source.

Document graph_attr, node_attr, and edge_attr in the README.

More informative exception when Graphviz executables cannot be called.

Version 0.3.4

Fixed missing identifier quoting for DOT keywords (thanks to Paulo Urio).

Version 0.3.3

Made format and engine case-insensitive.

Version 0.3.2

Indent graph_attr, node_attr, and edge_attr lines, adapt nodes and edges.

Version 0.3.1

Fixed view() failing on paths with forward slashes on Windows.

Version 0.3

Added Python 3.3+ support.

Made attributes order stable (sorting plain dicts).

Fixed edgeop in undirected graphs.

Version 0.2.2

Support pdf opening on Linux.

Fixed rendering filenames w/spaces.

Version 0.2.1

Fixed rendering on Mac OS X.

Version 0.2

Added format selection, use 'PDF’ as default. Added engines selection, use 'dot' as default. Added source encoding, use 'UTF-8' as default.

Changed constructor arguments order, removed compile() and save()-method, reimplemented compilation in render() method, make interface more similar to gv.3python (backwards incompatible change).

Double-quote-sign escaping, attribute list quoting.

mkdirs() now correctly supports current directory filenames.

Version 0.1.1

Removed automatic '-' to '&minus;' replacement from labels.

Fixed documentation typos.

Version 0.1

First public release.