Install Python on Windows + pip + virtualenv
When you're in a development environment, you often suffer from differences in installed libraries. Furthermore, since Python 2.x series and Python 3.x series may be in parallel, virtualenv should be used to manage the environment.
Python
Installation
- Get the installer Download the Python binary for Windows (Python 2.7.x) from the Python site.
- Double-click the installer to run
- Next
- Specify the installation destination Next
- Next
- Installation
- Finish
Creating a Python execution bat file
Create a batch file that registers environment variables for running python. To run python, double-click this batch file to launch a command prompt.
python27.bat
@echo off
:::Preparation before execution
set EXEC_DIR=%~dp0
::: python
PATH=C:\usr\local\bin\Python27;C:\usr\local\bin\Python27\Scripts;%PATH%
cd %EXEC_DIR%
PROMPT #$S
%ComSpec%
pip installation
- Save get-pip.py as
- Run get-pip.py
# python get-pip.py
Get-pip.py is not needed after execution, so delete it
virtualenv installation
# pip install virtualenv
How to use virtualenv
Usage: python -m virtualenv ${Folder where you want to create a virtual environment}
Create a virtual environment called "hoge" and start / end
Creating a virtual environment (Python 2.7)
# python -m virtualenv --python=C:\usr\local\bin\Python27\python.exe hoge
Already using interpreter C:\usr\local\bin\Python27\python.exe
New python executable in hoge\Scripts\python.exe
Installing setuptools, pip...done.
#
Start virtual environment
# hoge\Scripts\activate
(hoge) #
End of virtual environment
(hoge) # hoge\Scripts\deactivate
#
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