Python Install Tips

python installs:

# display all python installs on ubuntu
ls -ls /usr/bin/python*

# display all python installs on windows
py -0p

# display python version being used
python -V
python --version

pip install

• pip is the recommended package-management system written in Python used to install and manage software package

pip -V
pip --version

package installs:

# see location(s) of installed packages 
python -m site

# show all installed packages
pip list

# see location of individual package
pip show pandas

# see where python installs your local packages
python -m site --user-site

install packages:

pip install matplotlib

pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org pip matplotlib

C:\Users\jklei\AppData\Local\Programs\Python\Python310\Scripts\pip3 install pandasql
C:\users\nrf46657\appdata\local\programs\python\python310\Scripts\pip3 install virtualenv

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Setting up Remote-SSH for VS Code

• Create config file in this location: C:\Users\nrf46657\.ssh\config
  • Can see this by F1 -> Remote-SSH: Settings
• Populate file with the following

Host deq1.bse.vt.edu
  HostName deq1.bse.vt.edu
  Port 311
  User jkleiner

Host deq2
  HostName deq2
  User jkleiner
  ProxyCommand ssh [email protected] -W %h:%p

• F1 -> Close Remote Connection to close

Getting set up with python on windows:

1. Install VS Code Desktop (User Installer 64 bit)
2. Install Python extension in VS Code
3. Install latest version of python from web browser (e.g. 3.10.5)
   • Select this interpreter in VS Code

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Set Up Virtual Environments

1. Open a Windows PowerShell
   • Navigate to your home directory PS C:\Users\nrf46657>
2. Install the python package virtualenv
   • PS C:\Users\nrf46657> py -m pip install --user virtualenv
3. Confirm install was successful
   • PS C:\Users\nrf46657> pip show virtualenv

   Name: virtualenv
   Version: 20.17.1
   Summary: Virtual Python Environment builder
   Home-page: https://virtualenv.pypa.io/
   Author: Bernat Gabor
   Author-email: [email protected]
   License: MIT
   Location: c:\users\nrf46657\appdata\roaming\python\python310\site-packages
   Requires: distlib, filelock, platformdirs
   Required-by:
   

4. Create a virtual environment
   • navigate to your project folder
     • PS C:\Users\nrf46657> chdir .\Desktop\GitHub\virtualenv-test-project\
   • create a virtual environment named "virtualenv4"
   • PS C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project> python -m virtualenv virtualenv4

   created virtual environment CPython3.10.5.final.0-64 in 2672ms
     creator CPython3Windows(dest=C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project\virtualenv4, clear=False, no_vcs_ignore=False, global=False)
     seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=C:\Users\nrf46657\AppData\Local\pypa\virtualenv)
       added seed packages: pip==22.3.1, setuptools==65.6.3, wheel==0.38.4
     activators BashActivator,BatchActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator
   

   • You can also be explicit in which python install youre using when creating the virtual environment
     • PS C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project> C:\Users\nrf46657\AppData\Local\Programs\Python\Python310\python.exe -m virtualenv venvName
5. Activate the virtual environment (in Command Prompt, permissions issue prevents us from being able to activate virtual environments from windows PowerShell, otherwise you could use PS C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project> virtualenv4\Scripts\activate)

   R:\>cd /d C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project
   C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project>virtualenv4\Scripts\activate
   (virtualenv4) C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project>
   

   • You will now be using the virtual environment untill you:
     1. Close the terminal, or
     2. Use the deactivate command
        • (virtualenv4) C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project>deactivate
6. check the pre-installed packages on the virtual environment

   (virtualenv4) C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project> pip list
   Package    Version
   ---------- -------
   pip        22.3.1
   setuptools 65.6.3
   wheel      0.38.4
   
   (virtualenv4) C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project>pip install --upgrade pip
   Requirement already satisfied: pip in c:\users\nrf46657\desktop\github\virtualenv-test-project\virtualenv4\lib\site-packages (22.3.1)
   

   • install packages into the environment

   (virtualenv4) C:\Users\nrf46657\Desktop\GitHub\virtualenv-test-project>python -m pip install pandas