我正在尝试在Windows 10上安装pygraphviz。在线有很多解决此问题的方法，但还没有一个对我有用。我遇到的确切问题是通过jupyter笔记本->

[1] import networkx as nx
import pylab as plt
from networkx.drawing.nx_agraph import graphviz_layout

[2]G = nx.DiGraph()
G.add_node(1,level=1)
G.add_node(2,level=2)
G.add_node(3,level=2)
G.add_node(4,level=3)

G.add_edge(1,2)
G.add_edge(1,3)
G.add_edge(2,4)

nx.draw(G, pos=graphviz_layout(G), node_size=1600, cmap=plt.cm.Blues,
    node_color=range(len(G)),
    prog='dot')
plt.show()

ModuleNotFoundError                       Traceback (most recent call last)
C:\Users\name\Anaconda3\lib\site-packages\networkx\drawing\nx_agraph.py 
in 
pygraphviz_layout(G, prog, root, args)
    254     try:
--> 255         import pygraphviz
    256     except ImportError:

ModuleNotFoundError: No module named 'pygraphviz'

ImportError                               Traceback (most recent call last)
<ipython-input-2-86a15892f0f0> in <module>()
  9 G.add_edge(2,4)
 10 
---> 11 nx.draw(G, pos=graphviz_layout(G), node_size=1600, cmap=plt.cm.Blues,
 12         node_color=range(len(G)),
 13         prog='dot')

C:\Users\name\Anaconda3\lib\site-packages\networkx\drawing\nx_agraph.py in graphviz_layout(G, prog, root, args)
226 
227     """
--> 228     return pygraphviz_layout(G,prog=prog,root=root,args=args)
229 
230 def pygraphviz_layout(G,prog='neato',root=None, args=''):

C:\Users\name\Anaconda3\lib\site-packages\networkx\drawing\nx_agraph.py in pygraphviz_layout(G, prog, root, args)
256     except ImportError:
257         raise ImportError('requires pygraphviz ',
--> 258                           'http://pygraphviz.github.io/')
259     if root is not None:
260         args+="-Groot=%s"%root

ImportError: ('requires pygraphviz ', 'http://pygraphviz.github.io/')

Command "C:\Users\name\Anaconda3\python.exe -u -c "import setuptools, 
tokenize;__file__='C:\\Users\\name~1\\AppData\\Local\\Temp\\pip-build-
n81lykqs\\pygraphviz\\setup.py';f=getattr(tokenize, 'open', open)
(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, 
__file__, 'exec'))" install --record C:\Users\name~1\AppData\Local\Temp\pip-
b3jz1lk5-record\install-record.txt --single-version-externally-managed --
compile" failed with error code 1 in C:\Users\name~1\AppData\Local\Temp\pip-
build-n81lykqs\pygraphviz\

C:\Users\name\Anaconda3>pip install pygraphviz-1.3.1-cp34-none-
win_amd64.whl
pygraphviz-1.3.1-cp34-none-win_amd64.whl is not a supported wheel on this 
platform.

C:\Users\name\Anaconda3>pip install pygraphviz-1.3.1-cp27-none-
win_amd64.whl
pygraphviz-1.3.1-cp27-none-win_amd64.whl is not a supported wheel on this 
platform.

最佳答案

更新了仓库: [GitHub]: CristiFati/Prebuilt-Binaries - (master) Prebuilt-Binaries/PyGraphviz/v1.5 :

[cfati@CFATI-5510-0:e:\Work\Dev\StackOverflow\q045093811]> "e:\Work\Dev\VEnvs\py_064_03.06.08_test0\Scripts\python.exe" -c "import pygraphviz"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'pygraphviz'

[cfati@CFATI-5510-0:e:\Work\Dev\StackOverflow\q045093811]> dir /b
other
src

For building on Windows:

(Graphviz versions ≥ 2.41)

First, in the root of the repository, perform git submodule update --init. This will download all submodules, which are mostly the dependencies for the Windows build. Next, add the windows\dependencies\graphviz-build-utilities directory to your PATH (and restart Visual Studio or the prompt with which you execute msbuild after that). This folder contains the tools Bison, Flex and SED (and future additions) with versions that are tested. If all went right, the dependencies are now set up and you can build Graphviz.

[cfati@cfati-5510-0:/cygdrive/e/Work/Dev/StackOverflow/q045093811/src/graphviz]> ~/sopr.sh
*** Set shorter prompt to better fit when pasted in StackOverflow (or other) pages ***

[064bit prompt]> git clone https://gitlab.com/graphviz/graphviz.git .
Cloning into '.'...
remote: Enumerating objects: 71728, done.
remote: Counting objects: 100% (71728/71728), done.
remote: Compressing objects: 100% (19331/19331), done.
remote: Total 71728 (delta 52200), reused 71681 (delta 52157)
Receiving objects: 100% (71728/71728), 163.79 MiB | 480.00 KiB/s, done.
Resolving deltas: 100% (52200/52200), done.
Checking out files: 100% (3870/3870), done.
[064bit prompt]>
[064bit prompt]> git submodule update --init
Submodule 'dependencies/criterion' (https://github.com/Snaipe/Criterion.git) registered for path 'dependencies/criterion'
Submodule 'windows/dependencies/graphviz-build-utilities' (https://github.com/ErwinJanssen/graphviz-build-utilities.git) registered for path 'windows/dependencies/graphviz-build-utilities'
Submodule 'windows/dependencies/libraries' (https://github.com/ErwinJanssen/graphviz-windows-dependencies.git) registered for path 'windows/dependencies/libraries'
Cloning into '/cygdrive/e/Work/Dev/StackOverflow/q045093811/src/graphviz/dependencies/criterion'...
Cloning into '/cygdrive/e/Work/Dev/StackOverflow/q045093811/src/graphviz/windows/dependencies/graphviz-build-utilities'...
Cloning into '/cygdrive/e/Work/Dev/StackOverflow/q045093811/src/graphviz/windows/dependencies/libraries'...
Submodule path 'dependencies/criterion': checked out '301d143ea42c024f22b673b69c72a4cb3c8d151f'
Submodule path 'windows/dependencies/graphviz-build-utilities': checked out '050fff84ce195e0740878748760fd801eeb07b23'
Submodule path 'windows/dependencies/libraries': checked out '141d3a21be904fa8dc2ae3ed01d36684db07a35d'
[064bit prompt]>
[064bit prompt]> git show head
commit 89292b5945933b1501293c04894ed9cf886241be (HEAD -> master, origin/master, origin/HEAD)
Merge: 429d43615 97811bd35
Author: Stephen C North <scnorth@gmail.com>
Date:   Mon Feb 4 08:09:40 2019 -0500

    Merge branch 'wasbridge/graphviz-master' into HEAD

[064bit prompt]> git status
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean

[064bit prompt]> git status
On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)
  (commit or discard the untracked or modified content in submodules)

        modified:   lib/cdt/cdt.vcxproj
        modified:   lib/cgraph/cgraph.vcxproj
        modified:   windows/dependencies/graphviz-build-utilities (modified content)

no changes added to commit (use "git add" and/or "git commit -a")

[cfati@CFATI-5510-0:e:\Work\Dev\StackOverflow\q045093811]> sopr.bat
*** Set shorter prompt to better fit when pasted in StackOverflow (or other) pages ***

[prompt]> "c:\Install\x86\Microsoft\Visual Studio Community\2015\vc\vcvarsall.bat" x64

[prompt]> set PATH=%PATH%;%CD%\src\graphviz\windows\dependencies\graphviz-build-utilities

[prompt]> msbuild src\graphviz\lib\cdt\cdt.vcxproj /t:Rebuild /p:Platform=x64;Configuration=Release;SolutionDir=%CD%\src\graphviz\;OutDir=%CD%\bin\Win\dynamic\064\UCRTv140\md\Release\graphviz\ >build_cdt_064.txt 2>&1

[prompt]> echo %errorlevel%
0

[prompt]> dir /b
bin
build_cdt.txt
other
src

[prompt]> msbuild src\graphviz\lib\cgraph\cgraph.vcxproj /t:Rebuild /p:Platform=x64;Configuration=Release;SolutionDir=%CD%\src\graphviz\;OutDir=%CD%\bin\Win\dynamic\064\UCRTv140\md\Release\graphviz\ >build_cgraph_064.txt 2>&1

[prompt]> echo %errorlevel%
0

[prompt]> dir /b "bin\Win\dynamic\064\UCRTv140\md\Release\graphviz"
cdt.dll
cdt.dll.lastcodeanalysissucceeded
cdt.exp
cdt.lib
cgraph.dll
cgraph.dll.lastcodeanalysissucceeded
cgraph.exp
cgraph.lib

[prompt]> mkdir include\graphviz

[prompt]> copy src\graphviz\lib\cdt\cdt.h include\graphviz
        1 file(s) copied.

[prompt]> copy src\graphviz\lib\cgraph\cgraph.h include\graphviz
        1 file(s) copied.

--- pygraphviz/graphviz_wrap.c.orig 2018-09-10 16:07:12.000000000 +0300
+++ pygraphviz/graphviz_wrap.c  2019-02-26 18:05:20.281741400 +0200
@@ -2988,7 +2988,18 @@
 
 
 #if PY_VERSION_HEX >= 0x03000000
-extern PyTypeObject PyIOBase_Type;
+static PyObject *PyIOBase_TypeObj;
+
+static int init_file_emulator(void)
+{
+  PyObject *io = PyImport_ImportModule("_io");
+  if (io == NULL)
+    return -1;
+  PyIOBase_TypeObj = PyObject_GetAttrString(io, "_IOBase");
+  if (PyIOBase_TypeObj == NULL)
+    return -1;
+  return 0;
+}
 #endif
 
 
@@ -3449,7 +3460,7 @@
   {
 #if PY_VERSION_HEX >= 0x03000000 || defined(PYPY_VERSION)
 #if !defined(PYPY_VERSION)
-    if (!PyObject_IsInstance(obj0, (PyObject *)&PyIOBase_Type)) {
+    if (!PyObject_IsInstance(obj0, PyIOBase_TypeObj)) {
       PyErr_SetString(PyExc_TypeError, "not a file handle");
       return NULL;
     }
@@ -3523,7 +3534,7 @@
   {
 #if PY_VERSION_HEX >= 0x03000000 || defined(PYPY_VERSION)
 #if !defined(PYPY_VERSION)
-    if (!PyObject_IsInstance(obj1, (PyObject *)&PyIOBase_Type)) {
+    if (!PyObject_IsInstance(obj1, PyIOBase_TypeObj)) {
       PyErr_SetString(PyExc_TypeError, "not a file handle");
       return NULL;
     }
@@ -6051,6 +6062,12 @@
   
   SWIG_InstallConstants(d,swig_const_table);
   
+#if PY_VERSION_HEX >= 0x03000000
+  if (init_file_emulator() < 0) {
+    return NULL;
+  }
+#endif
+
   PyDict_SetItemString(md,(char*)"cvar", SWIG_globals());
   SWIG_addvarlink(SWIG_globals(),(char*)"Agdirected",Swig_var_Agdirected_get, Swig_var_Agdirected_set);
   SWIG_addvarlink(SWIG_globals(),(char*)"Agstrictdirected",Swig_var_Agstrictdirected_get, Swig_var_Agstrictdirected_set);

"C:\Path\to\Python-3.6-amd64\pip" install "C:\Path\to\downloaded\pygraphviz-1.5-cp36-cp36m-win_amd64.whl"

关于python - 在Windows 10 64位Python 3.6上安装pygraphviz，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45093811/