pip

python3 -m pip install VS pip3 install

爷,独闯天下 提交于 2020-08-19 09:01:40
问题 I always use pip install (which I think is equivalent to pip3 install since I only have python3 in my env) to install packages. But I recently heard python3 -m pip install is better. Why? 回答1: I would advise against ever calling any pip somecommand (or pip3 ) script directly. Instead it's much safer to call pip 's executable module for a specific Python interpreter explicitly, something of the form path/to/pythonX.Y -m pip somecommand . There are many advantages to this, for example: It is

Pip install in Spyder

a 夏天 提交于 2020-08-19 07:05:57
问题 I'm using Python 3.6 through Spyder in Anaconda3. I have both the Anaconda installation and a "clean" python installation. Before I installed the "clean" python, when I ran the Python -V command in cmd I got the following version description Python 3.6.5 :: Anaconda, Inc. Now when I run the command it just says Python 3.6.5. and the pip list is a whole lot shorter. When ever I open Spyder and find some package that I don't have... how would I go about installing said package? If I just open

Pip install from a specific commit prompts “requirements already satisfied”

混江龙づ霸主 提交于 2020-08-19 06:42:06
问题 I'm using pip and a requirements.txt file to handle my python packages in my virtualenv. I have a particular package I install from Github so that inside my file I have: git+ssh://git@github.com/myuser/mypackage.git#egg=mypackage Since I'm working on the package quite often I need to re-install it but: pip install -r requirements.txt gives me back Requirement already satisfied (use --upgrade to upgrade)... for all the packages in requirements.txt that have new versions. If I run pip install

No matching distribution found for multiple packages

こ雲淡風輕ζ 提交于 2020-08-19 06:19:12
问题 Suddenly I get a lot of errors while trying to use my previously working (for many months) requirements file. I tried to go to the pypi.org and get the same 404 error. Is there something wrong with my setup? > pip install -r requirements.txt Collecting get==2019.4.13 (from -r requirements.txt (line 4)) Cache entry deserialization failed, entry ignored Exception: requests.exceptions.HTTPError: 404 Client Error: Not Found for url: https://pypi.org/simple/get/ If I remove line get==2019.4.13

Fatal error in launcher: Unable to create process using “file path1” file path2" : The system cannot find the file specified

时间秒杀一切 提交于 2020-08-19 05:53:27
问题 I am trying to use different versions of Python on my Windows pc and I'm getting this error when using pip : Fatal error in launcher: Unable to create process using '"c:\users\ryanm\appdata\local\programs\python\python38\python.exe" "C:\Python38\Scripts\pip.exe" ': The system cannot find the file specified. I understand that this might mean there's two PATH to each of those locations so it's confused, but c:\users\ryanm\appdata\local\programs\python\python38\python.exe doesn't even exist on

Fatal error in launcher: Unable to create process using “file path1” file path2" : The system cannot find the file specified

痴心易碎 提交于 2020-08-19 05:49:50
问题 I am trying to use different versions of Python on my Windows pc and I'm getting this error when using pip : Fatal error in launcher: Unable to create process using '"c:\users\ryanm\appdata\local\programs\python\python38\python.exe" "C:\Python38\Scripts\pip.exe" ': The system cannot find the file specified. I understand that this might mean there's two PATH to each of those locations so it's confused, but c:\users\ryanm\appdata\local\programs\python\python38\python.exe doesn't even exist on

使用Vscode进行Python开发环境配置

强颜欢笑 提交于 2020-08-19 04:31:53
Vscode是是一个强大的跨平台工具,我自己电脑是mac,公司电脑是win而且是内部环境,导致公司安装软件很费劲。好在vscode许多插件能直接离线安装,省去了很多麻烦。 很多人学习python,不知道从何学起。 很多人学习python,掌握了基本语法过后,不知道在哪里寻找案例上手。 很多已经做案例的人,却不知道如何去学习更加高深的知识。 那么针对这三类人,我给大家提供一个好的学习平台,免费领取视频教程,电子书籍,以及课程的源代码! QQ群:1097524789 Vscode用来写python其实并不算太友好,它不像Pycharm那样将所有事情都做好,你只需要敲代码就可以。初次使用Vscode可能会对一堆配置文件感到头大,其实仔细阅读官方设置文档,能解决大部分问题。但是官方文档也有说不清的地方,所以在此分享下我自己用Vscode配置Python开发环境的一些心得。 插件 首先,你要确保你的电脑已经装好了Python程序!本文不对此进行赘述,请自行百度。 必装插件:Python 就是这货,必须认准了Microsoft。 这个插件已经集成了代码提示、代码检查、代码格式化、代码调试等功能。 是不是以为安装完就万事大吉了? NoNoNo,这就是许多新手弄不清楚的地方了。 配置 想要实现上述功能,你还需要安装其他的东西,一步步来。 代码检查: 如果你没有使用虚拟环境

python程序设计第一章基础知识 题库及选解

陌路散爱 提交于 2020-08-19 04:31:26
由于学校的python是笔试,所以找了份感觉比较好的题库刷了下其中前八章的填空和判断,附上选解。各章链接如下 python程序设计题库完整版 https://blog.csdn.net/lijia111111/article/details/80763095 python程序设计第一章基础知识 题库及选解 https://blog.csdn.net/zimuzi2019/article/details/106963005 python程序设计第二章序列类型 题库及选解 https://blog.csdn.net/zimuzi2019/article/details/106962735 python程序设计第三章选择与循环 题库及选解 https://blog.csdn.net/zimuzi2019/article/details/106968152 python程序设计第四章字符串 题库及选解 https://blog.csdn.net/zimuzi2019/article/details/106967507 python程序设计第五章函数设计与应用 题库及选解 https://blog.csdn.net/zimuzi2019/article/details/106968597 python程序设计第六章面向对象程序设计 题库 https://blog.csdn.net

python pip install指定国内源镜像

坚强是说给别人听的谎言 提交于 2020-08-19 03:22:20
  有时候安装一些依赖包,网不好,直接超时,或者这个包就是死都下不下来的时候,可以指定国内源镜像。   pip install -i 国内镜像地址 包名   e.g. pip install -i http://mirrors.aliyun.com/pypi/simple/ numpy 这是临时指定镜像地址 清华:https://pypi.tuna.tsinghua.edu.cn/simple 阿里云:http://mirrors.aliyun.com/pypi/simple/ 中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/ 华中理工大学:http://pypi.hustunique.com/ 山东理工大学:http://pypi.sdutlinux.org/ 豆瓣:http://pypi.douban.com/simple/ note:新版ubuntu要求使用https源,要注意。 部分信息转自:https://www.cnblogs.com/wqpkita/p/7248525.html 来源: oschina 链接: https://my.oschina.net/u/4332788/blog/4293117

GitHub Trending第一之后,PaddleOCR再发大招:百度自研顶会SOTA算法正式开源!

≯℡__Kan透↙ 提交于 2020-08-19 03:14:31
要说生活里最常见、最便民的AI应用技术,OCR(Optical Character Recognition,光学字符识别)当属其中之一。寻常到日常办理各种业务时的身份证识别,前沿到自动驾驶车辆的路牌识别,都少不了它的加持。作为一名开发者,各种OCR相关的需求自然也少不了:卡证识别、票据识别、汽车场景、教育场景文字识别…… OCR领域向来开源repo比较少,大部分核心算法用在了商业化产品。今年算是OCR开源领域的丰收年,chineseocr_lite,easyocr,以及百度 飞桨 推出的 Paddle OCR先后横空出世。 ​ 确实喜大普奔 对于OCR方向开发者而言,开源repo最吸引人的莫过于: ① 高质量的预训练模型 ② 简单易上手的训练代码 ③ 好用无坑的部署能力 简单对比一下目前主流OCR方向开源repo的核心能力 ​ 对于 语种方面 ,easyOCR的优势在于多语言支持,非常适合有小语种需求的开发者; 从 预训练模型 来看,easyOCR目前暂无超轻量模型,chineseocr_lite最新的模型是10M左右,而 Paddle OCR提供的8.6M是 目前业界已知最轻量的 ; 对于 部署方面 ,easyOCR模型较大不适合端侧部署,Chineseocr_lite和 Paddle OCR都具备端侧部署能力; 对于 自定义训练 ,实际业务场景中,预训练模型往往不能满足需求