小编arp*_*rus的帖子

我尝试在互联网上大量搜索解决方案，但没有找到任何解决方案。我正在尝试删除画布上绘图周围的空白，如图所示，但到目前为止我还没有成功。

我写的简单代码是：

import tkinter as tk
import matplotlib
from matplotlib import style
style.use('seaborn-darkgrid')
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg,    NavigationToolbar2TkAgg
from matplotlib.figure import Figure
import random

class GUIplot(tk.Tk):
    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        printButton = tk.Button(self, text="Plot1", command=lambda: self.printMessage(canvas,a))
        printButton.grid(row=0, column=0, sticky='w') 
        f = Figure(figsize=(24,12))
        a = f.add_subplot(111, axisbg='r')
        canvas = FigureCanvasTkAgg(f, self)
        canvas.get_tk_widget().grid(row=1, columnspan=2)
        #canvas._tkcanvas.config(bg='blue')
        canvas.show()
        canvas.blit()        

    def printMessage(self,canvas,a):
        a.clear()
        my_random_x = random.sample(range(100),10)
        my_random_y = random.sample(range(100),10)
        a.plot(my_random_x,my_random_y,'*')
        canvas.draw()
        print("Wow")

GUIplot1 = GUIplot()
GUIplot1.title('PlotFunction')
w, h = GUIplot1.winfo_screenwidth(), GUIplot1.winfo_screenheight() …

我正在尝试使用Python的Selenium软件包自动登录到GMail。但是，我无法完成任务并得到以下错误：

Traceback (most recent call last):
  File "C:\Users\Surojit\Desktop\Python\automaticpasswordFiller.py", line   21, in <module>
    passwordElem = browser.find_element_by_id('Passwd')
  File "C:\Users\Surojit\AppData\Local\Programs\Python\Python35-32\lib\site- packages\selenium\webdriver\remote\webdriver.py", line 266, in  find_element_by_id
    return self.find_element(by=By.ID, value=id_)
  File "C:\Users\Surojit\AppData\Local\Programs\Python\Python35-32\lib\site- packages\selenium\webdriver\remote\webdriver.py", line 744, in find_element
    {'using': by, 'value': value})['value']
  File "C:\Users\Surojit\AppData\Local\Programs\Python\Python35-32\lib\site-  packages\selenium\webdriver\remote\webdriver.py", line 233, in execute
    self.error_handler.check_response(response)
  File "C:\Users\Surojit\AppData\Local\Programs\Python\Python35-32\lib\site- packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: Unable to locate  element: {"method":"id","selector":"Passwd"}
Stacktrace:
    at FirefoxDriver.prototype.findElementInternal_   (file:///C:/Users/Surojit/AppData/Local/Temp/tmpceecsm46/extensions/fxdriver@goo glecode.com/components/driver-component.js:10770)
     at FirefoxDriver.prototype.findElement   (file:///C:/Users/Surojit/AppData/Local/Temp/tmpceecsm46/extensions/fxdriver@goo  glecode.com/components/driver-component.js:10779)
    at DelayedCommand.prototype.executeInternal_/h   (file:///C:/Users/Surojit/AppData/Local/Temp/tmpceecsm46/extensions/fxdriver@goo    glecode.com/components/command-processor.js:12661)
    at DelayedCommand.prototype.executeInternal_    (file:///C:/Users/Surojit/AppData/Local/Temp/tmpceecsm46/extensions/fxdriver@goo glecode.com/components/command-processor.js:12666)
    at …