我试图在我的GUI中添加.jpeg图像，同时还有其他几个小部件。
使用我的代码，当我使用以下命令时，我可以在单独的Tkinter窗口中显示图像：
#self.label = Label(image = self.img)
但是，每当我尝试将图像添加到原始Tkinter窗口时，我都会在代码下面看到错误。我尝试将其添加到原始Tkinter窗口的方式是：
#self.label = Label(frame, image = self.img)
奇怪的是，当我尝试在较短版本的代码中复制错误时（例如直接在下面），它可以工作。然而！要在缩短的代码中复制错误，首先需要创建不同的错误。示例：将text = "Try"替换为text = "%s" %yikes（因为没有变量yikes它会给您一个错误）。将代码更改回之前的确切方式后，它会产生我在下面（TclError: image "pyimage__" doesn't exit）描述的错误。在最底层，我已经包括整个课程，因为我很难一直复制这个问题。我使用的是Python 2.7和Canopy 1.5.5。
import matplotlib.pyplot as plt
from Tkinter import *
from PIL import ImageTk, Image
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import numpy as np
from tkFileDialog import askopenfilename, askdirectory
class App:
def __init__(self, master):
frame = Frame(master)
self.button_left = Button(frame,text="< Previous Event")
self.button_left.grid(row=1,column=0)
self.button_right = Button(frame,text="Next Event >")
self.button_right.grid(row=1,column=3)
#Creating text for the UI indicating the number of leakage events
w = Label(frame, text="Trying to Recreate error")
w.grid(row=1,column=2)
self.m = Canvas(frame,width=50,height=25)
self.text_id = self.m.create_text(25,12.5, text="Try")
self.m.grid(row=1,column=1)
self.path = "C:\Carbonite\EL_36604.02_231694\EL_36604.02_231694_2015-06-15 10.39.57.jpeg"
self.image = Image.open(self.path)
self.img = ImageTk.PhotoImage(self.image)
#self.label = Label(image = self.img)
self.label = Label(frame,image = self.img)
self.label.image = self.img
self.label.grid(row = 3, column = 0)
frame.grid(row=0,column=0)
root = Tk()
app = App(root)
root.mainloop()
TclError Traceback (most recent call last)
C:\Carbonite\Main_interface_file.py in <module>()
136
137 root = Tk()
--> 138 app = App(root)
139 root.mainloop()
140
C:\Carbonite\Main_interface_file.py in __init__(self, master)
72 self.img = ImageTk.PhotoImage(self.image)
73 #self.label = Label(image = self.img)
---> 74 self.label = Label(frame,image = self.img)
75 self.label.image = self.img
76 self.label.grid(row=3, column = 0)
C:\Users\U10596\AppData\Local\Enthought\Canopy\App\appdata\canopy-1.5.5.3123.win-x86_64\lib\lib-tk\Tkinter.pyc in __init__(self, master, cnf, **kw)
2585
2586 """
-> 2587 Widget.__init__(self, master, 'label', cnf, kw)
2588
2589 class Listbox(Widget, XView, YView):
C:\Users\U10596\AppData\Local\Enthought\Canopy\App\appdata\canopy-1.5.5.3123.win-x86_64\lib\lib-tk\Tkinter.pyc in __init__(self, master, widgetName, cnf, kw, extra)
2084 del cnf[k]
2085 self.tk.call(
-> 2086 (widgetName, self._w) + extra + self._options(cnf))
2087 for k, v in classes:
2088 k.configure(self, v)
TclError: image "pyimage8" doesn't exist
import matplotlib.pyplot as plt
from Tkinter import *
from PIL import ImageTk, Image
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import numpy as np
from images_to_list import images_to_list
from tkFileDialog import askopenfilename, askdirectory
#Creating a class that creates the UI
class App:
def __init__(self, master):
self.event_num = 1
# Create a container
frame = Frame(master)
# Create 2 buttons (changes between leakage events
self.button_left = Button(frame,text="< Previous Event",
command=self.decrease)
self.button_left.grid(row=1,column=0)
self.button_right = Button(frame,text="Next Event >",
command=self.increase)
self.button_right.grid(row=1,column=3)
#Creating text for the UI indicating the number of leakage events
w = Label(frame, text="/ %s " % len(tft))
w.grid(row=1,column=2)
#Display the number of the current event in the series
self.m = Canvas(frame,width=50,height=25)
self.text_id = self.m.create_text(25,12.5, text="%s" % (self.event_num+1))
self.m.grid(row=1,column=1)
#Creating the plot of voltage data
self.fig = Figure()
self.ax = self.fig.add_subplot(111)
self.fig.autofmt_xdate()
import matplotlib.dates as mdates
self.ax.fmt_xdata = mdates.DateFormatter('%Y-%m-%d')
self.line, = self.ax.plot(tft[self.event_num],tf1[self.event_num],'.')
self.line2, = self.ax.plot(tft[self.event_num],tf2[self.event_num],'.')
self.ax.set_ylim([0,3.5])
self.path = "C:\Carbonite\EL_36604.02_231694\EL_36604.02_231694_2015-06-15 10.39.57.jpeg"
self.image = Image.open(self.path)
self.img = ImageTk.PhotoImage(self.image)
#self.label = Label(image = self.img)
self.label = Label(frame,image = self.img)
self.label.image = self.img
self.label.grid(row=3, column = 0)
self.canvas = FigureCanvasTkAgg(self.fig,master=master)
self.canvas.show()
self.canvas.get_tk_widget().grid(row=1,column=0)
frame.grid(row=0,column=0)
#Creating a textbox to jump to event number
self.textbox = Entry(frame,width=5)
button1 = Button(frame, text='Go', command=self.letsgo) #Linking "Go" button with letsgo function to jump to event number
self.textbox.grid(row=2,column=1)
button1.grid(row=2,column=2)
#function letsgo allows the user to jump to any event in the series
def letsgo(self):
txt = self.textbox.get()
try:
self.event_num = int(txt)
except ValueError:
print "Opps! The number you enter needs to be an integer!"
self.line.set_xdata(tft[self.event_num])
self.line.set_ydata(tf1[self.event_num])
self.line2.set_xdata(tft[self.event_num])
self.line2.set_ydata(tf2[self.event_num])
self.ax.set_xlim([min(tft[self.event_num]),max(tft[self.event_num])])
self.canvas.draw()
self.m.itemconfig(self.text_id, text="%s" % (self.event_num+1))
#function decrease allows the user to use the decrease button
def decrease(self):
if self.event_num == 0: #if statement accounts for if the user tries to see the event previous to the first one
self.event_num = len(tft)-1
else:
self.event_num -= 1
self.line.set_xdata(tft[self.event_num])
self.line.set_ydata(tf1[self.event_num])
self.line2.set_xdata(tft[self.event_num])
self.line2.set_ydata(tf2[self.event_num])
self.ax.set_xlim([min(tft[self.event_num]),max(tft[self.event_num])])
self.canvas.draw()
self.m.itemconfig(self.text_id, text="%s" % (self.event_num+1))
#function increase allows the user to use the increase button
def increase(self):
if self.event_num == len(tft)-1: #if statement accounts for if the user tries to see the event after the last one.
self.event_num = 0
else:
self.event_num += 1
self.line.set_xdata(tft[self.event_num])
self.line.set_ydata(tf1[self.event_num])
self.line2.set_xdata(tft[self.event_num])
self.line2.set_ydata(tf2[self.event_num])
self.ax.set_xlim([min(tft[self.event_num]),max(tft[self.event_num])])
self.canvas.draw()
self.m.itemconfig(self.text_id, text="%s" % (self.event_num+1))
root = Tk()
app = App(root)
root.mainloop()
答案 0 :(得分：0)
您需要对Frame进行网格化。当我添加
frame.grid()
在__init__方法的底部，它可以正常工作。但是，当我运行您发布的代码时，我不会收到错误。它只是没有显示标签。我想知道这是否是一些依赖平台的行为。我在Yosemite 10.10.5上使用python 2.7。
编辑：我已经尝试了你的扩展示例，正如预期的那样，我没有看到你的行为。我可以来回更改代码。如果不正确，我会收到错误;如果它是正确的，它运行正常。
您描述的行为必须与Canopy有关。 python解释器的工作方式，它会在每次运行时将脚本编译为字节码;它对于脚本曾经说过的内容一无所知。
您可以尝试从命令行运行可疑脚本吗？此外，您可能应该在问题中添加canopy标记。
我不会使用Canopy，所以我不认为我可以帮助你，但我在这里留下答案作为有希望的人的背景。
祝你好运。答案 1 :(得分：0)
我找到了问题!!
我在代码的最开头使用了askopenfilename()，这会打开一个额外的Tkinter窗口。结果，有两个Tkinter窗口打开并混淆了程序。
通过将所有内容发送到创建的第一个Tk窗口（并删除第二个窗口），它解决了问题。