简介
Traits是开源扩展库，Traits本身与科学计算可视化没有直接关联，但他其实TVTK，Mayavi，TraitsUI基础
安装：
pip3 install traits-
4.6.
0-cp36-cp36m-win_amd64.whlpip3 install traits
from traits.api import HasTraits 进行测试
使用：
traits属性可以像类的属性来定义，但是要像实例的属性来使用
>>>
from traits.api import HasTraits
>>>
from traits.api import HasTraits,Color
>>>
>>>
class Circle(HasTraits):
... color =
Color #traits属性可以像类的属性来定义，但是要像实例的属性来使用
...
>>> c =
Circle()
>>>
Circle.color #不是类的属性
Traceback (most recent call last):
File "<stdin>", line
1,
in <module>
AttributeError: type object 'Circle' has no attribute
'color'
>>>
c.color #是实例的属性
<PyQt4.QtGui.QColor
object at
0x000000000AAA74A8>
>>> c.color =
'red'
>>>
c.color.getRgb()
(255,
0,
0,
255)
>>> c.color =
'abc' #按照严格的类型来区别变量，并且会给出明确的错误信息和使用提示
Traceback (most recent call last):
File "<stdin>", line
1,
in <module>
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python35\lib\site-p
ackages\traits\trait_handlers.py
", line 173, in error
value )
traits.trait_errors.TraitError: The 'color' trait of a Circle instance must be a
string of the form (r,g,b) or (r,g,b,a)
where r, g, b, and a are integers
from
0 to
255, a QColor instance, a Qt.GlobalColor, an integer which
in hex
is of the
form 0xRRGGBB, a string of the form #RGB, #RRGGBB, #RRRGGGBBB or #RRRRGGGGBBBB
or 'aliceblue' or
'antiquewhite' or
'aqua' or
'aquamarine' or
'azure' or
'beige'
or 'bisque' or
'black' or
'blanchedalmond' or
'blue' or
'blueviolet' or
'brown'
.............
>>>
c.configure_traits() #出现配置属性框，供我们选择颜色
>>>
c.configure_traits()
True #选择颜色后返回True
>>>
c.color
<PyQt4.QtGui.QColor
object at
0x000000000EA74D68>
#现在返回的颜色与我们选择的一致
转载于:https://www.cnblogs.com/ssyfj/p/9308013.html
