pipdeptree --graph-output doesn't work as expected

[Jiauyan Li]

C:\Python310>pipdeptree --graph-output pdf > dependencies.pdf
Traceback (most recent call last):
File "C:\Python310\lib\site-packages\graphviz\backend\execute.py", line 79, in run_check
proc = _run_input_lines(cmd, input_lines, kwargs=kwargs)
File "C:\Python310\lib\site-packages\graphviz\backend\execute.py", line 99, in _run_input_lines
popen = subprocess.Popen(cmd, stdin=subprocess.PIPE, **kwargs)
File "C:\Python310\lib\subprocess.py", line 969, in init
self._execute_child(args, executable, preexec_fn, close_fds,
File "C:\Python310\lib\subprocess.py", line 1438, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "C:\Python310\lib\runpy.py", line 196, in run_module_as_main
return run_code(code, main_globals, None,
File "C:\Python310\lib\runpy.py", line 86, in run_code
exec(code, run_globals)
File "C:\Python310\Scripts\pipdeptree.exe_main.py", line 7, in
File "C:\Python310\lib\site-packages\pipdeptree_init.py", line 884, in main
output = dump_graphviz(tree, output_format=args.output_format, is_reverse=args.reverse)
File "C:\Python310\lib\site-packages\pipdeptree_init.py", line 620, in dump_graphviz
return graph.pipe().decode("utf-8")
File "C:\Python310\lib\site-packages\graphviz\piping.py", line 104, in pipe
return self._pipe_legacy(format,
File "C:\Python310\lib\site-packages\graphviz_tools.py", line 171, in wrapper
return func(*args, **kwargs)
File "C:\Python310\lib\site-packages\graphviz\piping.py", line 121, in _pipe_legacy
return self._pipe_future(format,
File "C:\Python310\lib\site-packages\graphviz\piping.py", line 161, in _pipe_future
return self._pipe_lines(*args, input_encoding=self.encoding, **kwargs)
File "C:\Python310\lib\site-packages\graphviz\backend\piping.py", line 161, in pipe_lines
proc = execute.run_check(cmd, capture_output=True, quiet=quiet, **kwargs)
File "C:\Python310\lib\site-packages\graphviz\backend\execute.py", line 84, in run_check
raise ExecutableNotFound(cmd) from e
graphviz.backend.execute.ExecutableNotFound: failed to execute WindowsPath('dot'), make sure the Graphviz executables are on your systems' PATH

[acd407]

try to check the PATH variable and locate Graphviz executables. If you use msys2, scoop or vcpkg, just search and install the package.