python-3.x

问题 I have a pipeline in NiFi that pulls down some invalid JSON that I need to clean up. The best solution I've concocted is to run a Python script via ExecuteStreamCommand and simultaneously clean/split it up in one fell swoop. However, even though I use sys.stdout.write() in my for loop, only the original JSON comes out in the output stream in NiFi. Am I misusing sys.stdout.write() or is this possible, but I've just done something wrong? My end goal is for each line of the json to be a new flow

问题 I have a pipeline in NiFi that pulls down some invalid JSON that I need to clean up. The best solution I've concocted is to run a Python script via ExecuteStreamCommand and simultaneously clean/split it up in one fell swoop. However, even though I use sys.stdout.write() in my for loop, only the original JSON comes out in the output stream in NiFi. Am I misusing sys.stdout.write() or is this possible, but I've just done something wrong? My end goal is for each line of the json to be a new flow

问题 I got into problem to solve matrix grouping problem based on its relation. Problem Consider a group of people giving books to each other. More formally, group is composed of all the people who know one another, whether directly to transitively. Example Consider a matrix of input M Input 1100 1110 0110 0001 Output: 2 There are n = 4 people numbered related[0] through related[3]. There are 2 pairs who directly know each other: (related[0], related[1]) and (related[1], related[2]). Because a

问题 I got into problem to solve matrix grouping problem based on its relation. Problem Consider a group of people giving books to each other. More formally, group is composed of all the people who know one another, whether directly to transitively. Example Consider a matrix of input M Input 1100 1110 0110 0001 Output: 2 There are n = 4 people numbered related[0] through related[3]. There are 2 pairs who directly know each other: (related[0], related[1]) and (related[1], related[2]). Because a

问题 I got into problem to solve matrix grouping problem based on its relation. Problem Consider a group of people giving books to each other. More formally, group is composed of all the people who know one another, whether directly to transitively. Example Consider a matrix of input M Input 1100 1110 0110 0001 Output: 2 There are n = 4 people numbered related[0] through related[3]. There are 2 pairs who directly know each other: (related[0], related[1]) and (related[1], related[2]). Because a

问题 I try this: def test(x): return x**2 a = map(test,[1,2,3]) If I get the value like this: for i in a: print(a) I will get 1,4,9 and this works perfectly. But if I do this: a[0] . The error will be raised. I know it is because the result of map function is map class: type(map(test,[1,2,3])) == <class 'map'> which is not subsciptable. So how can I use the index to get the value of the result of map function? NOTE: This behavior is specific to python 3. 回答1: Convert the map object into a list

问题 Every-time i start Pycharm i need to tell it what is my default interpreter. But it forgets and asks against after restarting the program. Is there anyway i can set it so that PyCharm would remember what my default interpreters was so I don't need to specify it when i restart the software? 回答1: Here you can set it. Here you can set interpreter for every upcoming project. In previous versions it was like. File->Default Settings 来源： https://stackoverflow.com/questions/58767672/how-to-set

问题 So I'm coding a little bot in python and I'm having a problem. It seems to be a common problem, but I've never seen it asked in the same situation I'm in. Ok so here is the code posing problem : old_values = float((removeprc(browser.find_element_by_xpath('//*[@id="draggableNavRightResizable"]/section/section[2]/section[1]/div[3]/ul/li[1]/div[2]/div[6]/span').text))) browser.find_element_by_xpath('//*[@id="draggableNavRightResizable"]/section/section[2]/section[1]/div[3]/ul/li[1]/div[2]/div[6]

问题 I am trying to get the number of how many messages have been sent in a channel, and using the logs_from() function wont work because that only accepts a fixed amount of messages to retrieve, how do I do this? 回答1: In the discord.py-rewrite branch, there is a TextChannel.history AsyncIterator . If you pass limit=None , it will return all the messages from the channel @bot.command() async def message_count(ctx, channel: discord.TextChannel=None): channel = channel or ctx.channel count = 0 async

问题 How to move a zip file to a new destination and then open it in python 3. I have made following code, but it seems it does not work for zip file. import os source = "C:/Users/sa/Desktop/Pic_ - Im.zip" destination = "C:/Users/sa/Pictures/pic" os.rename(source, destination) 回答1: This will move the zip from one location to another and then extract its contents to a directory of your choosing ( other_dir , in this instance) import shutil import zipfile from contextlib import closing def _unzip