python-3.x

问题 Is there any alternative one liner for this simple code block: n = int(input()) for i in range(n): print(i**2) I tried: print(i**2 for i in range(int(input()))) It takes an input, but gives the following error: <generator object <genexpr> at 0x00000000032D3E60> My problem is a little bit different than this qs. That qs helped print items in a list whether I need print them in newline. 回答1: As Jon and Patrick mention, that's not an error, it's what happens when you print the __repr__ of a

问题 I am getting gcc error when trying to install Ta-lib as a global package on my mac. I get an error below: gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I//anaconda/include -arch x86_64 -I//anaconda/include -arch x86_64 -I//anaconda/lib/python3.6/site-packages/numpy/core/include -I/usr/include -I/usr/local/include -I/opt/include -I/opt/local/include -I//anaconda/include/python3.6m -c talib/common.c -o build/temp.macosx-10.7-x86_64-3

问题 How can i get to show all the logs of pytest into Allure. and what are stdout and stderr used for ? Please check the Highlighted Code which i am referring to 回答1: The stdout and stderr are used to display output produced by tests to those steams. To get them (and log ) populated in Allure report your test or application executed by test have to produce output to corresponding streams. import logging import sys logger = logging.getLogger() logger.setLevel(logging.DEBUG) def test_001(): logger

问题 Im looking for a little help here. I've been using requests in Python to gain access to a website. Im able access the website and get a response header but im not exactly sure how to download the zip file contained in the Content-disposition. Im guessing this isnt a function Requests can handle or at least I cant seem to find any info on it. How do I gain access to the file and save it? 'Content-disposition': 'attachment;filename=MT0376_DealerPrice.zip' 回答1: Using urllib instead of requests

问题 I would like to contruct DST-valid timestamps only using the standard library in Python 3.9 and was hoping this was possible with this version. In my timezone "Europe/Berlin", the DST crossings for 2020 are: 2020-03-29 at 02:00 the clock switches to 03:00 (there is no hour 2!) 2020-10-25 at 03:00 the clock switches back to 02:00 (the hour 2 exists two times!) My script yields the following output: MARCH 2020-03-29 01:59:00+01:00 CET plus 1 h: 2020-03-29 02:59:00+01:00 CET (should be 03:59:00

问题 I am using Python 3.6 with PyCharm and it's kind of frustrating that there's no support for code completion for special cases of dictionary objects (with fixed key schema). Say for example I create and try to access a simple dictionary object like this: inventory = {'name': 'hammer', 'price': 2.3} inventory[''] When I position my cursor inside the quotes ' ' and hit Ctrl + Space i get code completion and the IDE correctly suggests all the possible keys in the dictionary object. That's great !

问题 Google Chrome Canary does not work with headless on Windows. Chrome headless does not work on windows. The Error happens like following when I tried to execute below code. But it works on non-headless mode. I know Canary is unstable but I want to using it to learning about web advanced spec. This error caused by bug in canary? Or caused by my code? code: from selenium import webdriver from selenium.webdriver.chrome.options import Options op = Options() op.binary_location = "C:\\Users\

问题 Google Chrome Canary does not work with headless on Windows. Chrome headless does not work on windows. The Error happens like following when I tried to execute below code. But it works on non-headless mode. I know Canary is unstable but I want to using it to learning about web advanced spec. This error caused by bug in canary? Or caused by my code? code: from selenium import webdriver from selenium.webdriver.chrome.options import Options op = Options() op.binary_location = "C:\\Users\

问题 I'm learning Tkinter at the moment. From my book, I get the following code for producing a simple vertical scrollbar: from tkinter import * # Import tkinter class ScrollText: def __init__(self): window = Tk() # Create a window window.title("Scroll Text Demo") # Set title frame1 = Frame(window) frame1.pack() scrollbar = Scrollbar(frame1) scrollbar.pack(side = RIGHT, fill = Y) text = Text(frame1, width = 40, height = 10, wrap = WORD, yscrollcommand = scrollbar.set) text.pack() scrollbar.config

问题 I'm learning Tkinter at the moment. From my book, I get the following code for producing a simple vertical scrollbar: from tkinter import * # Import tkinter class ScrollText: def __init__(self): window = Tk() # Create a window window.title("Scroll Text Demo") # Set title frame1 = Frame(window) frame1.pack() scrollbar = Scrollbar(frame1) scrollbar.pack(side = RIGHT, fill = Y) text = Text(frame1, width = 40, height = 10, wrap = WORD, yscrollcommand = scrollbar.set) text.pack() scrollbar.config