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[gaoxuesong <question680907@xxxxxxxxxxxxxxxxxxxxx>]

Question #680907 on Yade changed:
https://answers.launchpad.net/yade/+question/680907

gaoxuesong posted a new comment:
Sorry, Jan. I make it confucius.  I want to write a class for data post-
process. In my defined class, the Sphere class from yade is used. When i
invoke my class from yade terminal, the error comes.

The code in my defined class yadeDatapost is the following, 
import numpy as np 
import os 
class yadeDataPost:
    def __init__(self):
        pass 
    
    def erase_outbox_sphere(self, box):
        for eb in O.bodies:
            if isinstance(eb.shape, Sphere):
                xi = eb.state.pos[0]
                yi = eb.state.pos[1]
                zi = eb.state.pos[2]
                if (xi<box[0] or xi>box[1] or yi<box[2] or yi>box[3] or zi<box[4] or zi>box[5]):
                    O.bodies.erase(eb.id)
    def __str__(self):
        return 'this class is execute successfully' 
        
The code inputting in the yade terminal, 
yade
O.load('./svdir/time-3.5')
import sys 
sys.path.append('/mnt/hgfs/virpc/backup')
from yadedatapost import yadeDataPost 
dp1 = yadeDataPost()
box = [2.5e-3, 3.0e-3, 0e-3, 1.0e-3, 0.9e-3, 1.5e-3] 
dp1.erase_outbox_sphere(box)


The following is the errors, 

In [8]: dp1 = yadeDataPost()
   ...: 
   ...: box = [2.5e-3, 3.0e-3, 0e-3, 1.0e-3, 0.9e-3, 1.5e-3] 
   ...: 
   ...: dp1.erase_outbox_sphere(box)
   ...: 
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
/usr/bin/yade in <module>()
      3 box = [2.5e-3, 3.0e-3, 0e-3, 1.0e-3, 0.9e-3, 1.5e-3]
      4 
----> 5 dp1.erase_outbox_sphere(box)

/mnt/hgfs/virpc/backup/yadedatapost.py in erase_outbox_sphere(self, box)
     21     def erase_outbox_sphere(self, box):
     22         for eb in O.bodies:
---> 23             if isinstance(eb.shape, Sphere):
     24                 xi = eb.state.pos[0]
     25                 yi = eb.state.pos[1]

NameError: global name 'Sphere' is not defined

Much thanks.

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