python-3.6

问题 My current understanding (based on these answers: one, two, three; and Python documentation) of how import in Python works is (just in case it matters: all the code snippets are tested on Python 3.6.1) : Say we have a module mod , which has submodules sub and sub1 ; sub , in turn, has a function func ; then we can (given that mod installed in current environment, of course): import mod mod.sub.func() mod.sub1 # or import mod.sub mod.sub.func() mod.sub1 # will result in "NameError: name 'mod'

问题 I have been trying to write a program to automate my work. My task has series of steps but I am stuck at one point. I am constantly getting NoSuchElementException. I have tried to use id, class, name methods of Selenium but nothing seems to work. My present code is this: from selenium import webdriver from selenium.webdriver.common.by import By browser = webdriver.Chrome('C:\\Users\\abc\\AppData\\Local\\Programs\\Python\\Python36\\chromedriver.exe') browser.get("http://example.com/login.aspx"

问题 I am working on a Win10 machine, with python 3.6.3 and using tensorflow 1.9, pip 18.0. I did not provide an option to install tensorflow with gpu, (i.e.), according to this link1, I used pip install tensorflow and did not provide option for using GPU. However, when trying to import tensorflow, I am faced with the following error ModuleNotFoundError: No module named '_pywrap_tensorflow_internal' After following various links, link2,link3, I installed the Visual studio update 3 and also used

问题 In the application I am building I have a few "windows" I am working with. I am trying to figure out, according to python/industry standards, how to properly manage them. I have a warning screen, disclaimer screen, main gui, and essentially a message box for communicating errors. What my customer would like to transpire is the program displaying the warning screen (QDialog), and then the disclaimer screen (QDialog) on button click, then the main gui (QMainWindow) after the user has agreed to

问题 I do have one question regarding PyQt5 and cx_freeze, and I hope you can help me. I would like to know if there is a way to exclude undesired .dll import from PyQt5 library while creating an executable with cx_freeze. This request comes from the fact that when I create my executable with cx_freeze the whole PyQt5 library is imported resulting in a quite heavy application (~220 Mb). In my cx_freeze setup.py I have coded the following: import sys from setuptools import setup, find_packages from

问题 According to Python documentation, only recv() blocks but not send() . I wrote the following code trying to make a GUI sudoku game. I made it in such a way that I can update the game board even if the tkinter is executing its mainloop . However, during a test run, I found that if I close the window while the game is updating, the pipe.send() starts to block (I found that out using CPython profiler.) Can anyone please tell me why and, if possible, how to fix this issue? To produce the issue:

问题 I am making a text based game, and there is a point at which the game asks the user to input their surname. I have worked out a way to save the name to a file, and load the name from the file, but I do not know how to save the text that has been input into a variable. I have tried various methods i have seen online, but none have worked for me so far. The section of my code in question currently looks like this: (ignore the odd names like customwidget, i was experimenting once and left them

问题 I wrote a function that takes a string and using a for loop reads each letter in the string. Based on what the two adjacent letters are, it writes a new letter to a new string. Once the for loop finishes, if the length of the new string is greater than 1, it calls the function again with the new string. Everything seems to work fine, except it is returning a None type. It will print the correct output from inside the function, and the type is correct (string), but when I do print(triangle(row

问题 I have a dictionary like this: a= {1982: [(1,2,3,4)], 1542: [(4,5,6,7), (4,6,5,7)]} and I want to change the all the tuples (1,2,3,4),(4,5,6,7),(4,6,5,7) to lists, in this case: [1,2,3,4], [4,5,6,7], [4,6,5,7] I have tried for key, value in a.items(): for i in value: i = tuple(i) but it does now work. How can I achieve it? 回答1: As far as I understand you want to convert each tuple in a list. You can do this using a dictionary comprehension: {k: [list(ti) for ti in v] for k, v in a.items()}

问题 I have a dictionary like this: a= {1982: [(1,2,3,4)], 1542: [(4,5,6,7), (4,6,5,7)]} and I want to change the all the tuples (1,2,3,4),(4,5,6,7),(4,6,5,7) to lists, in this case: [1,2,3,4], [4,5,6,7], [4,6,5,7] I have tried for key, value in a.items(): for i in value: i = tuple(i) but it does now work. How can I achieve it? 回答1: As far as I understand you want to convert each tuple in a list. You can do this using a dictionary comprehension: {k: [list(ti) for ti in v] for k, v in a.items()}