Jupyter Notebook单元不断运行永不停止

如何解决Jupyter Notebook单元不断运行永不停止

在我的课程中，我必须创建以下图片（一张没有效果）

以下是我到目前为止尝试过的内容：

import PIL
from PIL import Image
from PIL import ImageEnhance
from PIL import ImageDraw
from PIL import ImageFont

fnt = ImageFont.truetype('readonly/fanwood-webfont.ttf',75)
# read image and convert to RGB
image=Image.open("readonly/msi_recruitment.gif").convert('RGB')
drawing_object = ImageDraw.Draw(image)

# build a list of 9 images which have different brightnesses
enhancer=ImageEnhance.Brightness(image)
images=[]
x = 0
for i in range(0,10):
    x += 1
    z = x 
    if x % 3 == 0 :
        z = 9
        drawing_object.rectangle((0,450,800,325),fill='black')
        drawing_object.text((20,350),'channel intensity 0.{}'.format(z),font=fnt,fill=(255,255,255))

    elif x % 3 == 1: 
        z = 1
        drawing_object.rectangle((0,255))

    else:
        z = 5
        drawing_object.rectangle((0,255))
    images.append(enhancer.enhance(10/10))

## create a contact sheet from different brightnesses
first_image=images[0]
contact_sheet=PIL.Image.new(first_image.mode,(first_image.width*3,first_image.height*3))
x=0
y=0

for img in images:
    # Lets paste the current image into the contact sheet
    
    contact_sheet.paste(img,(x,y) )
    
    #-->> I think the problem starts HERE <<--
    pixels = img.load()
    w = image.width
    h = image.height

    for x in range(3 * w):
        for y in range(3 * h):

            #-------0th row---------

            if x in range(0,w) and y in range(0,h): # grid[0,0]
                for i in range(w):
                    for j in range(h):
                        pixels[i,j] = (0,90)

            elif x in range(w,2 * w) and y in range(0,1]
                for i in range(w):
                    for j in range(h):
                        pixels[i,50)

            elif x in range(2 * w,3 * w) and y in range(0,2]
                for i in range(w):
                    for j in range(h):
                        pixels[i,10)

            #--------1st row---------


            elif x in range(0,w) and y in range(h,2 * h): # grid[1,j] = (90,0)

            elif x in range(w,2 * w) and y in range(h,j] = (50,90)

            elif x in range(2 * w,3 * w) and y in range(h,j] = (10,0)

            #--------2nd row----------

            elif x in range(0,w) and y in range(2 * h,3 * h): # grid[2,90,2 * w) and y in range(2 * h,50,0)

            elif x in range(2 * w,3 * w) and y in range(2 * h,2]
                for i in range(w):
                    for j in range(h):        
                        pixels[i,10,0)
    
    # Now we update our X position. If it is going to be the width of the image,then we set it to 0
    # and update Y as well to point to the next "line" of the contact sheet.
    if x+first_image.width == contact_sheet.width:
        x=0
        y=y+first_image.height
    else:
        x=x+first_image.width



# resize and display the contact sheet
contact_sheet = contact_sheet.resize((int(contact_sheet.width/2),int(contact_sheet.height/2) ))


        
display(contact_sheet)

image是我得到的。当我运行此程序时，Jupyter Notebook单元将继续运行[*]。好吧，在我用pixels添加代码的一部分（在#-->> I think the problem starts HERE <<--之后）之前，我在完全相同的视图中具有此网格，但是没有颜色效果。但是现在，我可能犯了一些错误。

感谢您的帮助。

解决方法

在代码的以下部分-

    // this.queue(request);
    // Get the token from the auth service.
    const token: string = this.localStorageService.getToken() ? this.localStorageService.getToken() : null;
    let options = {};
    if (token && request.url.indexOf('refreshlogin') === -1) {
        options = {
            headers: request.headers
                .set('Authorization','Bearer ' + token)
                .set('Accept','application/hal+json')
        };
    }

    // Clone the request to add the new header.
    let clonedRequest = request.clone(options);
    // Pass on the cloned request instead of the original request.
    return next.handle(clonedRequest)
    .pipe(
        tap((evt: HttpEvent<any>) => {
            if (evt instanceof HttpResponse) {
              localStorage.setItem('lastActivity',moment().format());
              this.spinnerService.hide();
            }
        },(err: any) => {
            if (err.status === 401 || err.status === 403) {
                const expirationTime = localStorage.getItem('expire_in');
                const lastActivity = localStorage.getItem('lastActivity');
                const now = moment().format();
                const idleTime = moment(now).diff(moment(lastActivity),'seconds');
                if (idleTime > Number(expirationTime)) {
                    // call refresh token
                    return this.authService.refreshToken().pipe(switchMap(
                        (response: any) => {
                          if (response.status === 200) {
                            const decodedToken = jwt_decode(response.access_token);
                            this.localStorageService.storeToken(response.access_token);
                            this.localStorageService.storeExpireIn(response.expires_in);
                            this.localStorageService.storeRefreshToken(response.refresh_token);
                            this.localStorageService.storeloggedInFlag(CryptoJS.AES.encrypt(loggedInFlag,secretKey).toString());
                            this.store.dispatch(new authActions.SetCurrentUser(decodedToken.displayName));
                            clonedRequest = clonedRequest.clone({
                              setHeaders: {
                                Authorization: 'Bearer ' + response.access_token,Accept: 'application/hal+json'
                              }
                            });
                            return next.handle(clonedRequest);
                          } else {
                            this.spinnerService.hide();
                            this.localStorageService.logout();
                          }
                        }
                      ));
                } else {
                    this.spinnerService.hide();
                    this.localStorageService.logout();
                }
            }
        })
    );
}

...您不是一次又一次地用值更新整个范围（w）和范围（h）吗？那是你要的吗？您正在检查x和y是否在特定范围内，但是您只是在向每个像素写入某个值，而不是写入特定的像素。