安装Graphviz 2.38后,“ RuntimeError:确保Graphviz可执行文件在系统路径上”
我下载了Graphviz 2.38MSI版本并安装在文件夹下C:\Python34,然后运行pip install Graphviz,一切顺利。在系统的路径中,我添加了C:\Python34\bin。在尝试在线运行测试脚本时filename=dot.render(filename='test'),我收到一条消息 RuntimeError: failed to execute ['dot', '-Tpdf', '-O', 'test'], make sure the Graphviz executables are on your systems' path 我试图"C:\Python34\bin\dot.exe"输入系统的路径,但是它没有用,甚至创建了一个"GRAPHVIZ_DOT"带有value 的新环境变量"C:\Python34\bin\dot.exe",但仍然没有用。我尝试卸载Graphviz和pip uninstall graphviz,然后重新安装并再次进行pip安装,但是没有任何效果。 整个回溯消息是: Traceback (most recent call last): File "C:\Python34\lib\site-packages\graphviz\files.py", line 220, in render proc = subprocess.Popen(cmd, startupinfo=STARTUPINFO) File "C:\Python34\lib\subprocess.py", line 859, in __init__ restore_signals, start_new_session) …