Question

尝试在Ubuntu 14.04上运行这一小段代码

import matplotlib
matplotlib.use('TkAgg')

import pylab as PL
import random as RD
import scipy as SP

RD.seed()

populationSize = 100
noiseLevel = 1

def init():
    global time, agents

    time = 0

    agents = []
    for i in xrange(populationSize):
        newAgent = [RD.gauss(0, 1), RD.gauss(0, 1)]
        agents.append(newAgent)

def draw():
    PL.cla()
    x = [ag[0] for ag in agents]
    y = [ag[1] for ag in agents]
    PL.plot(x, y, 'bo')
    PL.axis('scaled')
    PL.axis([-100, 100, -100, 100])
    PL.title('t = ' + str(time))

def step():
    global time, agents

    time += 1

    for ag in agents:
        ag[0] += RD.gauss(0, noiseLevel)
        ag[1] += RD.gauss(0, noiseLevel)

import pycxsimulator
pycxsimulator.GUI().start(func=[init,draw,step])

但收到以下错误消息：

Traceback (most recent call last):
  File "/home/joaomeirelles/Documents/USP/TESE/exemplos/pycx-0.31/abm-randomwalk.py", line 49, in <module>
pycxsimulator.GUI().start(func=[init,draw,step])
  File "/home/joaomeirelles/Documents/USP/TESE/exemplos/pycx-0.31/pycxsimulator.py", line 48, in __init__
self.initGUI()
  File "/home/joaomeirelles/Documents/USP/TESE/exemplos/pycx-0.31/pycxsimulator.py", line 77, in initGUI
self.status.grid(row=1,column=0,padx=2,pady=2,sticky='nswe')
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1985, in grid_configure
+ self._options(cnf, kw))
_tkinter.TclError: cannot use geometry manager grid inside . which already has slaves managed by pack
[Finished in 0.4s with exit code 1]

有谁知道它会是什么？ 我尝试使用不同版本的Tcl/Tk（8.5和8.6）并更新MGLTools，但没有一个有效。

感谢 JM

Answer 1

我评论了第75行：＃self.notebook.pack（expand = YES，fill = BOTH，padx = 5，pady = 5，side = TOP）和第78行：#self.status.pack（side = TOP，fill = X，padx = 1，pady = 1，expand = NO）

之后，我尝试过的模型都奏效了。

Answer 2

错误消息正好告诉您问题所在：

无法使用几何管理器网格。已经有奴隶了由pack管理

这意味着您的代码中的某个位置在根窗口的子窗口小部件上调用.pack(...)（“由pack管理的从属”），稍后您将调用.grid(...)另一个窗口小部件也是根窗口的子窗口（“不能使用几何管理器网格...”）。

在任何给定的容器窗口（框架，根窗口，顶层）中，所有直接子项只能由网格OR包管理，但不能同时由两者管理。

pycxsimulator TclError Ubuntu

2 个答案: