用自定义消息替换错误
Replacing errors with custom messages
我的程序是关于图像处理的，它会在 运行 打开图像时询问用户。但是，如果用户在没有 selecting 任何图像的情况下关闭 window，我会收到以下错误：
Traceback (most recent call last):
File "<string>", line 420, in run_nodebug
File "E:\Projet Complet\Test 2.py", line 255, in <module>
Ima1=Image.open(a)
File "C:\EduPython\App\lib\site-packages\PIL\Image.py", line 2317, in open
fp = io.BytesIO(fp.read())
AttributeError: 'str' object has no attribute 'read'
我正在尝试用打开的消息框中的 "You didn't choose any image" 等自定义消息替换该错误。我知道如何打开消息框，但我不知道如何用它替换错误消息。
我试过这样做：
main.withdraw()
try:
a = filedialog.askopenfilename()
main.deiconify()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
但是它给了我上面的错误。
这是完整的代码：
from tkinter import*
import tkinter as Tkinter
from tkinter import filedialog, DISABLED, messagebox as tkMessageBox
import os
import ntpath
from PIL import Image, ImageTk, ImageFilter
import PIL
from collections import Counter
from random import randint
import random
import PIL.ImageOps
def EchelleDeGris():
Ima2=Image.new("RGB",(z[0],z[1]))
px=Ima1.load()
px1=Ima2.load()
for x in range(z[0]):
for y in range(z[1]):
p=px[x,y]
if type(p)==int:
p=(p,p,p)
o=int((p[0]+p[1]+p[2])/3)
px1[x,y]=(o,o,o)
Ima2.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def SupprimerImage():
I2 = Tkinter.Label(main, image=imt)
I2.grid(row=0, column=4, columnspan =4)
def Luminosite():
Ima2=Image.new("RGB",(z[0],z[1]))
px=Ima1.load()
px1=Ima2.load()
for x in range(z[0]):
for y in range(z[1]):
p=px[x,y]
if type(p)==int:
p=(p,p,p)
px1[x,y]=(p[0]+S1.get(),p[1]+S1.get(),p[2]+S1.get())
Ima2.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def AnnulerModifications():
I2 = Tkinter.Label(main, image=im1)
I2.grid(row=0, column=4, columnspan =4)
def get_pixel(pixels, x, y):
try:
return pixels[x, y]
except IndexError:
return None
def get_neighbors(pixels, x, y):
neighbors = list()
neighbors.append(get_pixel(pixels, x, y - 1))
neighbors.append(get_pixel(pixels, x, y + 1))
neighbors.append(get_pixel(pixels, x - 1, y))
neighbors.append(get_pixel(pixels, x + 1, y))
neighbors.append(get_pixel(pixels, x - 1, y - 1))
neighbors.append(get_pixel(pixels, x - 1, y + 1))
neighbors.append(get_pixel(pixels, x + 1, y - 1))
neighbors.append(get_pixel(pixels, x + 1, y + 1))
return neighbors
def filter_art(pixels, size):
indexes = dict()
for x in range(size[0]):
for y in range(size[1]):
color = get_pixel(pixels, x, y)
neighbors = get_neighbors(pixels, x, y)
new_color = Counter(neighbors).most_common()[0][0]
if new_color is not None:
indexes[x, y] = new_color
for x, y in indexes:
pixels[x, y] = indexes[x, y]
def pop_art(path_orig, path_mod, coef):
s=[]
for i in range(9):
r=(randint(0,255), randint(0,255), randint(0,255))
g=(randint(0,255), randint(0,255), randint(0,255))
b=(randint(0,255), randint(0,255), randint(0,255))
image_orig = Image.open(path_orig)
size = image_orig.size
image_mod = Image.new("RGB",(size[0],size[1]))
pixels_orig = image_orig.load()
pixels_mod = image_mod.load()
for x in range(size[0]):
for y in range(size[1]):
p = pixels_orig[x, y]
if isinstance(p, int):
rgb = (p,p,p)
elif isinstance(p, tuple) and len(p) in (3, 4):
rgb = p[:3]
else:
raise TypeError('Unknown pallete')
average_color = sum(rgb) / 3
if average_color <= 85:
pixels_mod[x, y] = r
elif 85 < average_color <= 170:
pixels_mod[x, y] = g
elif average_color > 170:
pixels_mod[x, y] = b
for _ in range(coef):
filter_art(pixels_mod, size)
image_mod.save(''+dir_path+'\PopArt\Modified Images\result'+str(i)+'.png')
Img=[None]*9
for i in range(9):
Img[i]=Image.open(""+dir_path+"\PopArt\Modified Images\result"+str(i)+".png")
basewidth = int(Img[i].size[1]/3)
wpercent = (basewidth / float(Img[i].size[0]))
hsize = int((float(Img[i].size[1]) * float(wpercent )))
Img[i] = Img[i].resize((basewidth , hsize ), PIL.Image.ANTIALIAS)
Img[i].save(''+dir_path+'\PopArt\Resized Images\resized_image'+str(i)+'.png')
Img1=[None]*9
pixels1=[None]*9
Imaz=Image.new("RGB",(basewidth*3,hsize*3))
pixels=Imaz.load()
for i in range(9):
Img1[i]=Image.open(''+dir_path+'\PopArt\Resized Images\resized_image'+str(i)+'.png')
pixels1[i]=Img1[i].load()
for x in range(0,basewidth):
for y in range(0,hsize):
pixels[x,y]=pixels1[0][x,y]
for y in range(hsize,hsize*2):
pixels[x,y]=pixels1[1][x,y-hsize]
for y in range(hsize*2,hsize*3):
pixels[x,y]=pixels1[2][x,y-hsize*2]
for x in range(basewidth,basewidth*2):
for y in range(0,hsize):
pixels[x,y]=pixels1[3][x-basewidth,y]
for y in range(hsize,hsize*2):
pixels[x,y]=pixels1[4][x-basewidth,y-hsize]
for y in range(hsize*2,hsize*3):
pixels[x,y]=pixels1[5][x-basewidth,y-hsize*2]
for x in range(basewidth*2,basewidth*3):
for y in range(0,hsize):
pixels[x,y]=pixels1[6][x-basewidth*2,y]
for y in range(hsize,hsize*2):
pixels[x,y]=pixels1[7][x-basewidth*2,y-hsize]
for y in range(hsize*2,hsize*3):
pixels[x,y]=pixels1[8][x-basewidth*2,y-hsize*2]
Imaz = Imaz.resize((size[0] , size[1] ), PIL.Image.ANTIALIAS)
Imaz.save(""+dir_path+"\PopArt\Result Image\result.png")
def usepop():
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\traitement.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
I2.update_idletasks()
pop_art(a, None, coef=4)
im2 = ImageTk.PhotoImage(file=""+dir_path+"\PopArt\Result Image\result.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def change_contrast(level):
img = Image.open(a)
img.load()
factor = (259 * (level+255)) / (255 * (259-level))
for x in range(img.size[0]):
for y in range(img.size[1]):
color = img.getpixel((x, y))
if type(color) == int:
color=(color,color,color)
new_color = tuple(int(factor * (c-128) + 128) for c in color)
new_color = new_color[0]
img.putpixel((x, y), new_color)
elif type(color) != int:
new_color = tuple(int(factor * (c-128) + 128) for c in color)
img.putpixel((x, y), new_color)
return img
def use_contrast():
result = change_contrast(S2.get())
result.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def recherche_contours():
Ima2=Image.new("RGB",(z[0],z[1]))
px=Ima1.load()
px1=Ima2.load()
for x in range(z[0]):
for y in range(z[1]):
p=px[x,y]
if type(p)==int:
p=(p,p,p)
o=int((p[0]+p[1]+p[2])/3)
px1[x,y]=(o,o,o)
Ima2 = Ima2.filter(ImageFilter.FIND_EDGES)
image = Ima2
if image.mode == 'RGBA':
r,g,b,a = image.split()
rgb_image = Image.merge('RGB', (r,g,b))
inverted_image = PIL.ImageOps.invert(rgb_image)
r2,g2,b2 = inverted_image.split()
final_transparent_image = Image.merge('RGBA', (r2,g2,b2,a))
final_transparent_image.save(""+dir_path+"\Requirements\ImageMod.png")
else:
inverted_image = PIL.ImageOps.invert(image)
inverted_image.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
main=Tk()
main.withdraw()
try:
a = filedialog.askopenfilename()
main.deiconify()
except AttributeError:
tkMessageBox.showinfo( "Resolution Error", "The image is too big, please select a smaller one.")
sys.exit()
dir_path = os.path.dirname(os.path.realpath("Test2.py"))
main.configure(background="#a1dbcd")
main.title("Photoshop Version.Megzari")
try:
Ima1=Image.open(a)
z=Ima1.size
nux=Image.new("RGB",(z[0],z[1]))
nuxy=nux.load()
for x in range(z[0]):
for y in range(z[1]):
nuxy[x,y]=(255,255,255)
nux.save(""+dir_path+"\Requirements\Blank.png")
main.withdraw()
a = filedialog.askopenfilename()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
main.deiconify()
if z>(400,400):
main.withdraw()
tkMessageBox.showinfo( "Resolution Error", "The image is too big, please select a smaller one.")
sys.exit()
elif z<(400,400):
im1 = ImageTk.PhotoImage(file=a)
I1 = Tkinter.Label(main, image=im1)
I1.grid(row=0, column=1, columnspan =3)
imt = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\Blank.png")
T1 = Tkinter.Label(main, image=imt)
T1.grid(row=0, column=4, columnspan =4)
B1 = Tkinter.Button(main, text ="Echelle de gris", command = EchelleDeGris, fg="#a1dbcd", bg="#383a39", state=NORMAL)
B1.grid(padx=20, pady=20, row=1, column=0)
B3 = Tkinter.Button(main, text ="Appliquer Luminosité", command = Luminosite, fg="#a1dbcd", bg="#383a39")
B3.grid(padx=20, pady=20, row=1, column=1)
S1 = Scale(main, from_=0, to=254, orient=HORIZONTAL, fg="#a1dbcd", bg="#383a39", length = 200)
S1.grid(row=2, column=1)
B2 = Tkinter.Button(main, text ="Supprimer Image", command = SupprimerImage, fg="#a1dbcd", bg="#383a39")
B2.grid(padx=20, pady=20, row=1, column=7)
B3 = Tkinter.Button(main, text ="Annuler Modifications", command = AnnulerModifications, fg="#a1dbcd", bg="#383a39")
B3.grid(padx=20, pady=20, row=1, column=6)
B4 = Tkinter.Button(main, text ="Pop Art", command = usepop, fg="#a1dbcd", bg="#383a39")
B4.grid(padx=20, pady=20, row=1, column=3)
S2 = Scale(main, from_=-258, to=258, orient=HORIZONTAL, fg="#a1dbcd", bg="#383a39", length = 200)
S2.grid(row=2, column=4)
B4 = Tkinter.Button(main, text ="Appliquer Contraste", command = use_contrast, fg="#a1dbcd", bg="#383a39")
B4.grid(padx=20, pady=20, row=1, column=4)
B5 = Tkinter.Button(main, text ="Trouver Contours", command = recherche_contours, fg="#a1dbcd", bg="#383a39")
B5.grid(padx=20, pady=20, row=1, column=5)
s=S1.get()
s2=S2.get()
main.mainloop()
编辑1：
我应用了@Juan T 的答案，它确实显示了消息，但它没有关闭 window 即使我启动了 sys.exit()
编辑2：
我找到了解决方法，我所要做的就是在 sys.exit()
之前添加 main.destroy()
编辑3：
现在，当我 运行 代码时，我 select 图像，它再次提示我输入图像。我想让它提示一次。
EDIT4：我修复了它，问题是我在导致问题的代码中隐藏了一个旧片段，现在一切正常。
如果你把 try 放在前面就可以了。所以，而不是：
Ima1=Image.open(a)
z=Ima1.size
...
nux.save(""+dir_path+"\Requirements\Blank.png")
main.withdraw()
try:
a = filedialog.askopenfilename()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
main.deiconify()
考虑：
try:
Ima1=Image.open(a)
z=Ima1.size
...
nux.save(""+dir_path+"\Requirements\Blank.png")
main.withdraw()
a = filedialog.askopenfilename()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
main.deiconify()
我的程序是关于图像处理的，它会在 运行 打开图像时询问用户。但是，如果用户在没有 selecting 任何图像的情况下关闭 window，我会收到以下错误：
Traceback (most recent call last):
File "<string>", line 420, in run_nodebug
File "E:\Projet Complet\Test 2.py", line 255, in <module>
Ima1=Image.open(a)
File "C:\EduPython\App\lib\site-packages\PIL\Image.py", line 2317, in open
fp = io.BytesIO(fp.read())
AttributeError: 'str' object has no attribute 'read'
我正在尝试用打开的消息框中的 "You didn't choose any image" 等自定义消息替换该错误。我知道如何打开消息框，但我不知道如何用它替换错误消息。
我试过这样做：
main.withdraw()
try:
a = filedialog.askopenfilename()
main.deiconify()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
但是它给了我上面的错误。 这是完整的代码：
from tkinter import*
import tkinter as Tkinter
from tkinter import filedialog, DISABLED, messagebox as tkMessageBox
import os
import ntpath
from PIL import Image, ImageTk, ImageFilter
import PIL
from collections import Counter
from random import randint
import random
import PIL.ImageOps
def EchelleDeGris():
Ima2=Image.new("RGB",(z[0],z[1]))
px=Ima1.load()
px1=Ima2.load()
for x in range(z[0]):
for y in range(z[1]):
p=px[x,y]
if type(p)==int:
p=(p,p,p)
o=int((p[0]+p[1]+p[2])/3)
px1[x,y]=(o,o,o)
Ima2.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def SupprimerImage():
I2 = Tkinter.Label(main, image=imt)
I2.grid(row=0, column=4, columnspan =4)
def Luminosite():
Ima2=Image.new("RGB",(z[0],z[1]))
px=Ima1.load()
px1=Ima2.load()
for x in range(z[0]):
for y in range(z[1]):
p=px[x,y]
if type(p)==int:
p=(p,p,p)
px1[x,y]=(p[0]+S1.get(),p[1]+S1.get(),p[2]+S1.get())
Ima2.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def AnnulerModifications():
I2 = Tkinter.Label(main, image=im1)
I2.grid(row=0, column=4, columnspan =4)
def get_pixel(pixels, x, y):
try:
return pixels[x, y]
except IndexError:
return None
def get_neighbors(pixels, x, y):
neighbors = list()
neighbors.append(get_pixel(pixels, x, y - 1))
neighbors.append(get_pixel(pixels, x, y + 1))
neighbors.append(get_pixel(pixels, x - 1, y))
neighbors.append(get_pixel(pixels, x + 1, y))
neighbors.append(get_pixel(pixels, x - 1, y - 1))
neighbors.append(get_pixel(pixels, x - 1, y + 1))
neighbors.append(get_pixel(pixels, x + 1, y - 1))
neighbors.append(get_pixel(pixels, x + 1, y + 1))
return neighbors
def filter_art(pixels, size):
indexes = dict()
for x in range(size[0]):
for y in range(size[1]):
color = get_pixel(pixels, x, y)
neighbors = get_neighbors(pixels, x, y)
new_color = Counter(neighbors).most_common()[0][0]
if new_color is not None:
indexes[x, y] = new_color
for x, y in indexes:
pixels[x, y] = indexes[x, y]
def pop_art(path_orig, path_mod, coef):
s=[]
for i in range(9):
r=(randint(0,255), randint(0,255), randint(0,255))
g=(randint(0,255), randint(0,255), randint(0,255))
b=(randint(0,255), randint(0,255), randint(0,255))
image_orig = Image.open(path_orig)
size = image_orig.size
image_mod = Image.new("RGB",(size[0],size[1]))
pixels_orig = image_orig.load()
pixels_mod = image_mod.load()
for x in range(size[0]):
for y in range(size[1]):
p = pixels_orig[x, y]
if isinstance(p, int):
rgb = (p,p,p)
elif isinstance(p, tuple) and len(p) in (3, 4):
rgb = p[:3]
else:
raise TypeError('Unknown pallete')
average_color = sum(rgb) / 3
if average_color <= 85:
pixels_mod[x, y] = r
elif 85 < average_color <= 170:
pixels_mod[x, y] = g
elif average_color > 170:
pixels_mod[x, y] = b
for _ in range(coef):
filter_art(pixels_mod, size)
image_mod.save(''+dir_path+'\PopArt\Modified Images\result'+str(i)+'.png')
Img=[None]*9
for i in range(9):
Img[i]=Image.open(""+dir_path+"\PopArt\Modified Images\result"+str(i)+".png")
basewidth = int(Img[i].size[1]/3)
wpercent = (basewidth / float(Img[i].size[0]))
hsize = int((float(Img[i].size[1]) * float(wpercent )))
Img[i] = Img[i].resize((basewidth , hsize ), PIL.Image.ANTIALIAS)
Img[i].save(''+dir_path+'\PopArt\Resized Images\resized_image'+str(i)+'.png')
Img1=[None]*9
pixels1=[None]*9
Imaz=Image.new("RGB",(basewidth*3,hsize*3))
pixels=Imaz.load()
for i in range(9):
Img1[i]=Image.open(''+dir_path+'\PopArt\Resized Images\resized_image'+str(i)+'.png')
pixels1[i]=Img1[i].load()
for x in range(0,basewidth):
for y in range(0,hsize):
pixels[x,y]=pixels1[0][x,y]
for y in range(hsize,hsize*2):
pixels[x,y]=pixels1[1][x,y-hsize]
for y in range(hsize*2,hsize*3):
pixels[x,y]=pixels1[2][x,y-hsize*2]
for x in range(basewidth,basewidth*2):
for y in range(0,hsize):
pixels[x,y]=pixels1[3][x-basewidth,y]
for y in range(hsize,hsize*2):
pixels[x,y]=pixels1[4][x-basewidth,y-hsize]
for y in range(hsize*2,hsize*3):
pixels[x,y]=pixels1[5][x-basewidth,y-hsize*2]
for x in range(basewidth*2,basewidth*3):
for y in range(0,hsize):
pixels[x,y]=pixels1[6][x-basewidth*2,y]
for y in range(hsize,hsize*2):
pixels[x,y]=pixels1[7][x-basewidth*2,y-hsize]
for y in range(hsize*2,hsize*3):
pixels[x,y]=pixels1[8][x-basewidth*2,y-hsize*2]
Imaz = Imaz.resize((size[0] , size[1] ), PIL.Image.ANTIALIAS)
Imaz.save(""+dir_path+"\PopArt\Result Image\result.png")
def usepop():
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\traitement.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
I2.update_idletasks()
pop_art(a, None, coef=4)
im2 = ImageTk.PhotoImage(file=""+dir_path+"\PopArt\Result Image\result.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def change_contrast(level):
img = Image.open(a)
img.load()
factor = (259 * (level+255)) / (255 * (259-level))
for x in range(img.size[0]):
for y in range(img.size[1]):
color = img.getpixel((x, y))
if type(color) == int:
color=(color,color,color)
new_color = tuple(int(factor * (c-128) + 128) for c in color)
new_color = new_color[0]
img.putpixel((x, y), new_color)
elif type(color) != int:
new_color = tuple(int(factor * (c-128) + 128) for c in color)
img.putpixel((x, y), new_color)
return img
def use_contrast():
result = change_contrast(S2.get())
result.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
def recherche_contours():
Ima2=Image.new("RGB",(z[0],z[1]))
px=Ima1.load()
px1=Ima2.load()
for x in range(z[0]):
for y in range(z[1]):
p=px[x,y]
if type(p)==int:
p=(p,p,p)
o=int((p[0]+p[1]+p[2])/3)
px1[x,y]=(o,o,o)
Ima2 = Ima2.filter(ImageFilter.FIND_EDGES)
image = Ima2
if image.mode == 'RGBA':
r,g,b,a = image.split()
rgb_image = Image.merge('RGB', (r,g,b))
inverted_image = PIL.ImageOps.invert(rgb_image)
r2,g2,b2 = inverted_image.split()
final_transparent_image = Image.merge('RGBA', (r2,g2,b2,a))
final_transparent_image.save(""+dir_path+"\Requirements\ImageMod.png")
else:
inverted_image = PIL.ImageOps.invert(image)
inverted_image.save(""+dir_path+"\Requirements\ImageMod.png")
im2 = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\ImageMod.png")
main.image = im2
I2 = Tkinter.Label(main, image=im2)
I2.grid(row=0, column=4, columnspan =4)
main=Tk()
main.withdraw()
try:
a = filedialog.askopenfilename()
main.deiconify()
except AttributeError:
tkMessageBox.showinfo( "Resolution Error", "The image is too big, please select a smaller one.")
sys.exit()
dir_path = os.path.dirname(os.path.realpath("Test2.py"))
main.configure(background="#a1dbcd")
main.title("Photoshop Version.Megzari")
try:
Ima1=Image.open(a)
z=Ima1.size
nux=Image.new("RGB",(z[0],z[1]))
nuxy=nux.load()
for x in range(z[0]):
for y in range(z[1]):
nuxy[x,y]=(255,255,255)
nux.save(""+dir_path+"\Requirements\Blank.png")
main.withdraw()
a = filedialog.askopenfilename()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
main.deiconify()
if z>(400,400):
main.withdraw()
tkMessageBox.showinfo( "Resolution Error", "The image is too big, please select a smaller one.")
sys.exit()
elif z<(400,400):
im1 = ImageTk.PhotoImage(file=a)
I1 = Tkinter.Label(main, image=im1)
I1.grid(row=0, column=1, columnspan =3)
imt = ImageTk.PhotoImage(file=""+dir_path+"\Requirements\Blank.png")
T1 = Tkinter.Label(main, image=imt)
T1.grid(row=0, column=4, columnspan =4)
B1 = Tkinter.Button(main, text ="Echelle de gris", command = EchelleDeGris, fg="#a1dbcd", bg="#383a39", state=NORMAL)
B1.grid(padx=20, pady=20, row=1, column=0)
B3 = Tkinter.Button(main, text ="Appliquer Luminosité", command = Luminosite, fg="#a1dbcd", bg="#383a39")
B3.grid(padx=20, pady=20, row=1, column=1)
S1 = Scale(main, from_=0, to=254, orient=HORIZONTAL, fg="#a1dbcd", bg="#383a39", length = 200)
S1.grid(row=2, column=1)
B2 = Tkinter.Button(main, text ="Supprimer Image", command = SupprimerImage, fg="#a1dbcd", bg="#383a39")
B2.grid(padx=20, pady=20, row=1, column=7)
B3 = Tkinter.Button(main, text ="Annuler Modifications", command = AnnulerModifications, fg="#a1dbcd", bg="#383a39")
B3.grid(padx=20, pady=20, row=1, column=6)
B4 = Tkinter.Button(main, text ="Pop Art", command = usepop, fg="#a1dbcd", bg="#383a39")
B4.grid(padx=20, pady=20, row=1, column=3)
S2 = Scale(main, from_=-258, to=258, orient=HORIZONTAL, fg="#a1dbcd", bg="#383a39", length = 200)
S2.grid(row=2, column=4)
B4 = Tkinter.Button(main, text ="Appliquer Contraste", command = use_contrast, fg="#a1dbcd", bg="#383a39")
B4.grid(padx=20, pady=20, row=1, column=4)
B5 = Tkinter.Button(main, text ="Trouver Contours", command = recherche_contours, fg="#a1dbcd", bg="#383a39")
B5.grid(padx=20, pady=20, row=1, column=5)
s=S1.get()
s2=S2.get()
main.mainloop()
编辑1：
我应用了@Juan T 的答案，它确实显示了消息，但它没有关闭 window 即使我启动了 sys.exit()
编辑2：
我找到了解决方法，我所要做的就是在 sys.exit()
main.destroy()
编辑3： 现在，当我 运行 代码时，我 select 图像，它再次提示我输入图像。我想让它提示一次。
EDIT4：我修复了它，问题是我在导致问题的代码中隐藏了一个旧片段，现在一切正常。
如果你把 try 放在前面就可以了。所以，而不是：
Ima1=Image.open(a)
z=Ima1.size
...
nux.save(""+dir_path+"\Requirements\Blank.png")
main.withdraw()
try:
a = filedialog.askopenfilename()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
main.deiconify()
考虑：
try:
Ima1=Image.open(a)
z=Ima1.size
...
nux.save(""+dir_path+"\Requirements\Blank.png")
main.withdraw()
a = filedialog.askopenfilename()
except AttributeError:
tkMessageBox.showinfo( "Image Error", "You didn't choose any image.")
sys.exit()
main.deiconify()