Discover Top Posts Tagged with #python 2.7

Python 虚拟环境在 Ubuntu 的安装、管理

首先 pip 才是最通用的 python 包管理工具

安装 pip 的命令：

#apt-get -y install python-pip #pip install --upgrade pip

pip 安装后的路径： /Library/Python/2.7/site-packages/pip-20.0.2-py2.7.egg/pip

1、查看你的系统是否安装virtualenv:

# virtualenv --version

2、安装 Virtualenv 虚拟环境：

# pip install virtualenv

3、创建不同 python 版本的虚拟 python3、Pyhon2 环境：

# virtualenv --python=usr/bin/python3 venv3 # 两种命令格式都可以 # virtualenv -p /usr/bin/python2 venv2 # 两种命令格式都可以 root@jdu4e00u53f7:~# virtualenv You must provide a DEST_DIR Usage: virtualenv [OPTIONS] DEST_DIR Options: --version show program's version number and exit -h, --help show this help message and exit -p PYTHON_EXE, --python=PYTHON_EXE The Python interpreter to use, e.g., --python=python2.5 will use the python2.5 interpreter to create the new environment. The default is the interpreter that virtualenv was installed with (/usr/bin/python)

4、虚拟环境的激活、安装组件：

# source VENV/bin/activate (VENV) root@jdu4e00u53f7:~# pip install django

五、退出虚拟环境

# deactivate

六、删除虚拟环境

# rm -r venv

直接删除虚拟环境所在的文件夹venv就删除了我们创建的venv虚拟环境。

可以使用 pip freeze > requirements.txt 将当前环境中的包的名称及版本导出到文本中然后在另一个环境中 pip install -r requirements.txt 安装

其次才推荐使用anaconda

1、下载Anaconda3: https://repo.continuum.io/archive/ 根据系统的 Python 版本选择对应的安装包。

2、进入下载目录，打开终端，根据版本输入安装命令：

Python 3.6 version #bash Anaconda3-4.3.1-Linux-x86_64.sh

Python 2.7 version bash Anaconda2-4.3.1-Linux-x86_64.sh

3、安装过程，一直回车即可，当遇到下面的选择，注意输入yes：

Do you wish the installer to prepend the Anaconda2 install location to PATH in your /home/gjq/.bashrc ? [yes|no] [no] >>> yes

4、安装成功

For this change to become active, you have to open a new terminal. Thank you for installing Anaconda2! Share your notebooks and packages on Anaconda Cloud! Sign up for free: https://anaconda.org

5、让.bashrc中添加的路径生效：

source ~/.bashrc

6、测试:

gjq@gjq-virtual-machine:~/Downloads$ python Python 2.7.13 |Anaconda 4.3.1 (64-bit)| (default, Dec 20 2016, 23:09:15) [GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux2 Type "help", "copyright", "credits" or "license" for more information. Anaconda is brought to you by Continuum Analytics.  Please check out: http://continuum.io/thanks and https://anaconda.org >>>

出现Anaconda 表示安装成功了！

配置 Anaconda Python2 和 Python3 虚拟环境

安装配置小结：

# 创建一个名为python36的环境，指定Python版本是3.6（不用管是3.6.x，conda会为我们自动寻找3.6.x中的最新版本） conda create --name python36 python=3.6 # 安装好后，使用activate激活某个环境 activate python36 # for Windows source activate python36 # for Linux & Mac # 激活后，会发现terminal输入的地方多了python36的字样，实际上，此时系统做的事情就是把默认2.7环境从PATH中去除，再把3.6对应的命令加入PATH # 此时，再次输入 python --version # 可以得到`Python 3.6.1 :: Continuum Analytics, Inc.`，即系统已经切换到了3.6的环境 # 如果想返回默认的python 2.7环境，运行 deactivate python34 # for Windows source deactivate python34 # for Linux & Mac # 删除一个已有的环境 conda remove --name python36 --all # 其他指令 conda info -e #查看已有的环境 conda remove -n env_name --all #删除环境 conda install -n py27 anaconda #在py27下安装科学计算的包，包很多，慎重选择

创建新的 python 3.6 虚拟环境：

root@jdu4e00u53f7:~# conda create --name python36 python=3.6 Fetching package metadata ......... Solving package specifications: . Package plan for installation in environment /root/anaconda3/envs/python36: The following NEW packages will be INSTALLED: certifi: 2016.2.28-py36_0 openssl: 1.0.2l-0 pip: 9.0.1-py36_1 python: 3.6.2-0 readline: 6.2-2 setuptools: 36.4.0-py36_0 sqlite: 3.13.0-0 tk: 8.5.18-0 wheel: 0.29.0-py36_0 xz: 5.2.3-0 zlib: 1.2.11-0 Proceed ([y]/n)? y

#Ubuntu #Python 2.7

Python 3.8: In addition to a new API for the configuration, the programming language Assignment gets expressions and position-dependent parameters.

#python dictionary append #python 3.8 #python 3 #python 2 vs python 3 #python 2.7

Installing and using virtual environment for python 2.7 and python 3.5

Hello friends, AI Sangam (Best Python Company) brings a simple but understandable document on installing virtual environment for python 2.7 and python 3.5. VIrtual environment helps you a lot while running different projects because your files in /usr/local/lib/python remains unaffected and packages are installed in the virtual environment only. Please spare some time to see this document

https://drive.google.com/file/d/1ZOZAw57XccOskV7tL7de6k0aLeuRhhrt/view?usp=sharing

#virtual environment #python 2.7 #python 3.5

this short video Explain How to convert .py To .exe easy methode without any probleme or any error its easy and fast convert to .exe file this methode is 100% Work with Python2.7 and Python 3 and work in Windows 10 and the Other operation system So i hope to enjoy and don't forgetto subscribe to support me if you want and thanks

#Python 2.7 #python 3 #Convert Py To exe #python #python coding #python tutorials #froyotutorials

The beta will not be released until I finish making the graphics. This is literally only level one of the game.

#game development #pygame #python 2.7 #sunfish

6/1/17

Thing-A-Day #1126 - Fighting Sim

I started to implement a mock D&D fighting thing, and it really sucks and has barely worked for 5 hours and now I’m sad and tired and don’t want to finish it. C’est la vie.

#thing a day #1001 to 1200 #python #python 2.7 #video games #programming #RPG

8/15/14

Thing-A-Day #105 - New Word Generator

This Python 2.7 program goes into a file in the same folder called input.txt, and generates statistically similar words to the input. For example, inputting Dr. Martin Luther King Jr.'s I Have a Dream speech gives you something like this:

"wintanthe our whetour of condodee the jayof vonale batound cotin"

Now, there is no punctuation coded into it, so keep that in mind. I may do that in the future though.

If there are any questions (or bugs you find), feel free to send me an ask!

#markov chains #words #thing a day #python #python 2.7 #generators #programming #software #1 to 200