Question

我正在关注official docs，但是在导入过程中会收到错误。

F:\>python
Python 2.7.11 |Anaconda custom (64-bit)| (default, Feb 16 2016, 09:58:36)[MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org

>>> from dask.dot import dot_graph

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Anaconda\lib\site-packages\dask\dot.py", line 11, in <module>
    graphviz = import_required("graphviz", "Drawing dask graphs requires the "
  File "C:\Anaconda\lib\site-packages\dask\utils.py", line 70, in import_required
raise RuntimeError(error_msg)
RuntimeError: Drawing dask graphs requires the `graphviz` python library and the `graphviz` system library to be installed.
>>>

我正在运行Anaconda并安装了graphviz。

C:\>conda install graphviz
Using Anaconda API: https://api.anaconda.org
Fetching package metadata .........
Solving package specifications: ..........

# All requested packages already installed.
# packages in environment at C:\Anaconda:
#
graphviz                  2.38.0                        2

我的目录C:\Anaconda\Library\bin\graphviz里面有一堆.exe，.dll和其他文件。 PATH变量中还有一些内容：

F:\>where dot
C:\Anaconda\Library\bin\dot.bat

以下是该文件的内容（C：\ Anaconda \ Library \ bin \ dot.bat）：

@echo off 
%~dp0.\graphviz\dot.exe %*

我安装了dask 0.11.0：

F:\>conda list dask
# packages in environment at C:\Anaconda:
#
Using Anaconda API: https://api.anaconda.org
dask                      0.11.0                   py27_0

这些错误出现在Windows和Linux中（Ubuntu 16.04及所有最新更新）。

还需要什么？

Answer 1

我没有使用Anaconda，但如果您希望使用graphviz，则应该使用：

安装graphviz python 模块（可能包含pip install graphviz）。
Download并安装graphviz 软件。

Answer 2

要在anaconda中使用dask的可视化部分，请同时安装graphviz和python-graphviz包。 Dask依赖于graphviz的python接口来进行可视化。

$ conda install graphviz python-graphviz

如何可视化dask图？

2 个答案: