errno

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: What kind of errors faced by what kind of library functions affect the errno and set it to non-zero value? In my following program, I intended to use if(errno!=0) as a condition to check if the library functions I used functioned properly or not, and this is what I found (see the code below): First I used if(errno!=0) to test if a file has been opened successfully with fopen() or not. If I try to open a non-existent file, then errno is set to non-zero (2 in my case) and it is verified by printing out the value of errno at each

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm new in python and i'm using pydub modules to play mp3 track. Here is my simple code to play mp3: #Let's play some mp3 files using python! from pydub import AudioSegment from pydub.playback import play song = AudioSegment.from_mp3("/media/rajendra/0C86E11786E10256/05_I_Like_It_Rough.mp3") play(song) When i run this program, it says: */usr/bin/python3.4 /home/rajendra/PycharmProjects/pythonProject5/myProgram.py /usr/local/lib/python3.4/dist-packages/pydub/utils.py:161: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am pretty new to Ruby.. was following the instructions on TeamTreehouse installing Ruby Development Environment on OSX (Yosemite). When I got to the step to create my test app. It's failing at the end. With Permission Denied. :( Not sure what I am doing wrong, I did try running gem install debug inspector and the bundle exec spring binstubb all and they both fail. []rails new testapp create create README.rdoc create Rakefile create config.ru create .gitignore create Gemfile create app create app/assets/javascripts/application.js create app

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Can anybody help me to solve this problem? There are 3 tables with 2 foreign keys: Schema::create('users', function (Blueprint $table) { $table->increments('id'); $table->string('name'); $table->string('email')->unique(); $table->string('password'); $table->rememberToken(); $table->timestamps(); }); Schema::create('firms', function (Blueprint $table) { $table->increments('id'); $table->string('title')->nullable(); $table->integer('user_id')->unsigned()->nullable(); $table->foreign('user_id')->references('id')->on('users'); $table->timestamps

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm having the following error: $ sudo chmod a+rwxt /dev/shm/ $ ls -ld /dev/shm/ drwxrwxrwt 2 root root 4096 Feb 4 06:56 /dev/shm/ $ python Python 2.6.6 (r266:84292, Dec 26 2010, 22:31:48) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import multiprocessing >>> mp = multiprocessing.Pool(2) Traceback (most recent call last): File " ", line 1, in File "/usr/lib/python2.6/multiprocessing/__init__.py", line 227, in Pool return Pool(processes, initializer, initargs) File "/usr/lib/python2.6

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am designing a Linux character device driver. I want to set errno when error occurs in ioctl() system call. long my_own_ioctl(struct file *file, unsigned int req, unsigned long arg) { long ret = 0; BOOL isErr = FALSE; // some operation // ... if (isErr) { // set errno // ... <--- What should I do? ret = -1; } return ret; } What should I do to achieve that? Thank you at advance! Please allow me to explain my application with more detail. My device is located in /dev/myCharDev. My user space application is like this: #define _COMMAND (1)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have included matplotlib in my program, I searched about numpy_atlas.dll on google and I seem to be the only one on Earth with this problem. setup.py from setuptools import setup import py2exe setup(console=['EulerMethod.py']) Running Py2Exe results in error C:\(..obmitted..)>python setup.py py2exe running py2exe *** searching for required modules *** *** parsing results *** ...... ...obmitted... ...... *** finding dlls needed *** error: [Errno 2] No such file or directory: 'numpy-atlas.dll' 回答1: Sounds like py2exe can't find dll.

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a program that uses urllib to periodically fetch a url, and I see intermittent errors like : I/O error(socket error): [Errno 111] Connection refused. It works 90% of the time, but the othe r10% it fails. If retry the fetch immediately after it fails, it succeeds. I'm unable to figure out why this is so. I tried to see if any ports are available, and they are. Any debugging ideas? For additional info, the stack trace is: File "/usr/lib/python2.6/urllib.py", line 203, in open return getattr(self, name)(url) File "/usr/lib/python2.6

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: On sublime text I'm getting following error while trying to validate JS. [Errno 2] No such file or directory: 'node' [cmd: ['node', '/Users/gurpreetsingh/Library/Application Support/Sublime Text 3/Packages/JSLint/linter.js', '--sloppy', '--indent', '2', '--node', '--nomen', '--vars', '--plusplus', '--stupid', '--todo', '/Users/gurpreetsingh/Documents/dev/aimia/infrastructure/endeavour-callcentre/endeavour-callcentre-web/src/main/webapp/js/modules/membervalidation.js']] [dir: /Users/gurpreetsingh/Documents/dev/aimia/infrastructure/endeavour

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using Beautiful Soup to try to scrape a web page. The code worked great but now it is not working. I think the problem is, the source site changed their login page. So I replaced the loginurl and it is apparently not able to connect to that url. I can connect to it directly. So can someone try to run this and tell me what I'm doing wrong? import requests from bs4 import BeautifulSoup import re import pymysql import datetime myurl = 'http://www.cbssports.com' loginurl = 'https://auth.cbssports.com/login/index' try: response = requests.get