为什么from mayavi import mlab没有用
明明mayavi安装正常，我是用pip安装的，几个组件也都安装了。

同问，用的3.7.0Python，Mayavi 4.6.2，运行导入命令时候，出现：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\3Dsimulation\AppData\Local\Programs\Python\Python37\lib\site-packages\mayavi\mlab.py", line 15, in <module>
from mayavi.core.common import process_ui_events
File "C:\Users\3Dsimulation\AppData\Local\Programs\Python\Python37\lib\site-packages\mayavi\core\common.py", line 16, in <module>
from apptools.persistence.state_pickler import create_instance
File "C:\Users\3Dsimulation\AppData\Local\Programs\Python\Python37\lib\site-packages\apptools\persistence\state_pickler.py", line 1210

I experienced the same problem but solved it. seems in the state_pickler.py file, in a few places (where the error message tells, it has \ in in the "if .... \ and " (used to split the and conditions in multiple lines), just to remove the \ to make all the " and " conditions in one line. There are a few places with the issue, then amazingly it work!
from stackoverflow @贴吧用户_0000582

你看看是不是文件名写的不好，我就是把文件名写成了mayavi结果就导入不了，改了名就好了