python-3.x

问题 This is my first post on SO, so please feel free to correct me if I'm doing anything wrong! I am making a simple GUI for my Raspberry Pi (that runs Raspbian stretch) on Windows (because I can use PyCharm on there). I am would like to install third party themes from this site and have followed the instructions on the wiki. However, on both Windows and Raspbian, it appears to install properly without any errors, but when I check for ttk by doing this: import tkinter.ttk tkinter.ttk.Style()

问题 I added two handlers with different formatters to my logger. The first one requires subclassing logging.Formatter to do custom formatting. The default formatter will suffice for the second handler. Let's say the first formatter simply removes newline characters from the message. The following script illustrates what seems like strange behavior: import logging logger = logging.getLogger(__name__) class CustomFormatter(logging.Formatter): def __init__(self, *args, **kwargs): super().__init__(

问题 I am working on writing automation tests for a custom web application. I am running into a problem where I can't change the text of a span. I have tried using driver.execute_script but have had no luck. (It would really help if I knew javascript better) As far as I know you can't click a span and the list is populated as a list of . What is the best way to change this text? 回答1: You need to set the innerHTML using execute_script(): driver.execute_script('arguments[0].innerHTML = "New value";'

问题 I am working on writing automation tests for a custom web application. I am running into a problem where I can't change the text of a span. I have tried using driver.execute_script but have had no luck. (It would really help if I knew javascript better) As far as I know you can't click a span and the list is populated as a list of . What is the best way to change this text? 回答1: You need to set the innerHTML using execute_script(): driver.execute_script('arguments[0].innerHTML = "New value";'

问题 I am trying to work out how to control resizing of the window containing a frame. In the code I have three buttons across the top that should to stay exactly where they are. When I drag the window to expand it, I want the frame and the text box it contains to expand with the master window. I have read that columnconfigure and rowconfigure can be used but not sure how to implement it. from tkinter import * from tkinter import scrolledtext master_window = Tk() # Create the buttons btn_Image =

问题 As of python 3.3 the stdlib has the venv module for creating virtual environments. Are python 3.x venv environments relocatable? 回答1: Nope, commands installed in ./bin have fixed paths in shabang lines. 来源： https://stackoverflow.com/questions/27186207/are-python-3-x-venv-environments-relocatable

问题 As of python 3.3 the stdlib has the venv module for creating virtual environments. Are python 3.x venv environments relocatable? 回答1: Nope, commands installed in ./bin have fixed paths in shabang lines. 来源： https://stackoverflow.com/questions/27186207/are-python-3-x-venv-environments-relocatable

问题 I've been trying to figure out how to divide the contents of a TkInter entry box with a number (a float, to be precise). I looked it up on Google, and I found nothing that answered my question, other than doing .get() for getting a number from a entry. I want to have a number already there (or have a static variable) that I can divide to get the results I need. Any help would be appreciated! Thanks a billion!! :D P.S. Here's the website results I saw before I posted this question: Results of

问题 I wanted to set QCullFace to FrontAndBack and that is why I wrote this: from PySide2.Qt3DRender import Qt3DRender cull_face = Qt3DRender.QCullFace() cull_face.setMode(Qt3DRender.QCullFace.FrontAndBack) render_pass = Qt3DRender.QRenderPass() render_pass.addRenderState(cull_face) The code above should set CullFace globally. But it does not. What did I do wrong? 回答1: I assume that the python binding does not change how Qt works in C++. So you probably have a Qt3DWindow somewhere (unless you

问题 I wanted to set QCullFace to FrontAndBack and that is why I wrote this: from PySide2.Qt3DRender import Qt3DRender cull_face = Qt3DRender.QCullFace() cull_face.setMode(Qt3DRender.QCullFace.FrontAndBack) render_pass = Qt3DRender.QRenderPass() render_pass.addRenderState(cull_face) The code above should set CullFace globally. But it does not. What did I do wrong? 回答1: I assume that the python binding does not change how Qt works in C++. So you probably have a Qt3DWindow somewhere (unless you