Python(x，y)中matplotlibwidget的实现似乎被破坏了。在

我相信有问题的文件是this1。如果您将该文件的第67行改为self.figure = pypolt.figure(figsize=(width, height), dpi=dpi)，那么您的代码将按您的需要工作。我已经包含了下面修改过的代码的完整副本，这样您就可以将其复制/粘贴到您的项目中，并使用matplotlibwidget，而不是从python(x，y)导入

问题似乎是直接实例化Figure对象会跳过整个Figure管理器构造的负载，这就是引发该错误的原因。我建议你用Python(x，y)提交一个bug报告并链接到这篇文章！在

带修改行的完整代码(请参阅上面的存储库链接以获取许可证)from PyQt4.QtGui import QSizePolicy

from PyQt4.QtCore import QSize

from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as Canvas

from matplotlib.figure import Figure

from matplotlib import rcParams

rcParams['font.size'] = 9

from matplotlib import pyplot

class MatplotlibWidget(Canvas):

"""

MatplotlibWidget inherits PyQt4.QtGui.QWidget

and matplotlib.backend_bases.FigureCanvasBase

Options: option_name (default_value)

-

parent (None): parent widget

title (''): figure title

xlabel (''): X-axis label

ylabel (''): Y-axis label

xlim (None): X-axis limits ([min, max])

ylim (None): Y-axis limits ([min, max])

xscale ('linear'): X-axis scale

yscale ('linear'): Y-axis scale

width (4): width in inches

height (3): height in inches

dpi (100): resolution in dpi

hold (False): if False, figure will be cleared each time plot is called

Widget attributes:

-

figure: instance of matplotlib.figure.Figure

axes: figure axes

Example:

-

self.widget = MatplotlibWidget(self, yscale='log', hold=True)

from numpy import linspace

x = linspace(-10, 10)

self.widget.axes.plot(x, x**2)

self.wdiget.axes.plot(x, x**3)

"""

def __init__(self, parent=None, title='', xlabel='', ylabel='',

xlim=None, ylim=None, xscale='linear', yscale='linear',

width=4, height=3, dpi=100, hold=False):

self.figure = pyplot.figure(figsize=(width, height), dpi=dpi)

self.axes = self.figure.add_subplot(111)

self.axes.set_title(title)

self.axes.set_xlabel(xlabel)

self.axes.set_ylabel(ylabel)

if xscale is not None:

self.axes.set_xscale(xscale)

if yscale is not None:

self.axes.set_yscale(yscale)

if xlim is not None:

self.axes.set_xlim(*xlim)

if ylim is not None:

self.axes.set_ylim(*ylim)

self.axes.hold(hold)

Canvas.__init__(self, self.figure)

self.setParent(parent)

Canvas.setSizePolicy(self, QSizePolicy.Expanding, QSizePolicy.Expanding)

Canvas.updateGeometry(self)

def sizeHint(self):

w, h = self.get_width_height()

return QSize(w, h)

def minimumSizeHint(self):

return QSize(10, 10)