Warning: file_get_contents(/data/phpspider/zhask/data//catemap/2/python/349.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Python 为什么我能';t从tkinter获取输入值作为文件名….I';我正在用给定的名称保存图像_Python_Tkinter - Fatal编程技术网

Python 为什么我能';t从tkinter获取输入值作为文件名….I';我正在用给定的名称保存图像

Python 为什么我能';t从tkinter获取输入值作为文件名….I';我正在用给定的名称保存图像,python,tkinter,Python,Tkinter,我试图用用户给定的名称捕获图像,但无法从Tkinter条目中获取值。 这是我的密码。但它表示“Application”对象没有属性“txt” class Application(object): def __init__(self, output_path = "./"): self.vs = cv2.VideoCapture(0) # capture video frames, 0 is your default video camera

我试图用用户给定的名称捕获图像,但无法从Tkinter条目中获取值。 这是我的密码。但它表示“Application”对象没有属性“txt”

class Application(object):
    def __init__(self, output_path = "./"):
        self.vs = cv2.VideoCapture(0) # capture video frames, 0 is your default video camera
        self.output_path = output_path  # store output path
        self.current_image = None  # current image from the camera

        self.root = tk.Tk()  # initialize root window
        self.root.title("Window")  # set window title
        # self.destructor function gets fired when the window is closed
        self.root.protocol('WM_DELETE_WINDOW', self.destructor)

        self.panel = tk.Label(self.root)  # initialize image panel
        self.panel.pack(padx=10, pady=10)

        # create a button, that when pressed, will take the current frame and save it to file
        lbl=tk.Label(self.root,text="Insert Image Name", font=("Arial Bold",10))
        lbl.pack(fill="both", expand=True, padx=5, pady=5)
        
        
        txt = tk.Entry(self.root,width=10)
        txt.pack(fill="both", expand=True, padx=5, pady=5)
        
        
        btn = tk.Button(self.root, text="Capture", command=self.take_snapshot)
        btn.pack(fill="both", expand=True, padx=5, pady=5)
        
        
        self.video_loop()


    def take_snapshot(self):
        """ Take snapshot and save it to the file """
        index=self.txt.get()
        filename =index+".jpg"
        p = os.path.join(self.output_path, filename)  # construct output path
        self.current_image.save(p, "png")  # save image as jpeg file
        print("[INFO] saved {}".format(filename))

创建
tk.条目时

txt=tk.Entry(self.root,宽度=10)
txt.pack(fill=“both”,expand=True,padx=5,pady=5)
您没有将变量保存到
self
,因此无法使用
self.txt
访问它。要解决此问题,只需将这两行更改为:

self.txt=tk.Entry(self.root,宽度=10)
self.txt.pack(fill=“both”,expand=True,padx=5,pady=5)

当您创建
tk.条目时

txt=tk.Entry(self.root,宽度=10)
txt.pack(fill=“both”,expand=True,padx=5,pady=5)
您没有将变量保存到
self
,因此无法使用
self.txt
访问它。要解决此问题,只需将这两行更改为:

self.txt=tk.Entry(self.root,宽度=10)
self.txt.pack(fill=“both”,expand=True,padx=5,pady=5)