Simplified Path input when enabling virtual environment in venv

0. Overview

In this article, when enabling a virtual environment using venv on the command prompt, By using command macros, we have summarized how to simplify complicated command input.

↓ This is

C:\users\username\envs\hogeenvs\Scripts\activate.bat

↓ It will be like this.

ahogeenvs

1. Background

I was not satisfied with Anaconda and decided to reorganize the Python development environment. So I uninstalled Anaconda, simply installed Python, and started to improve the environment.

2. Environment

PC:Windows10 Enterprise 1809 System: 64bit Terminal: Use command prompt (hereafter, cmd)

3. Trouble

Activation of virtual environment, which was easy to execute with conda, In venv, I had to enter complicated commands.

For example, let C: users / username / envs be the folder containing the virtual environment information. It is assumed that the usual work environment folder is set up in a different location.

So if you want to enable the virtual environment "hogeenvs" With conda, it was not necessary to enter the path to the virtual environment, so

activate hogeenvs                    (c1)

I should have described it as. However, venv requires the path from the current folder to the virtual environment folder, so

C:\users\username\envs\hogeenvs\Scripts\activate.bat                    (c2)

Must be stated.

This problem,

Although it can be solved by this method, If that does not happen, you need to manually enter (c2) above.

4. Solution

4.1 Macro registration with doskey command

Use command macros (called aliases in the Linux environment). First, enter the following on cmd.

doskey ahogeenvs=C:\users\username\envs\hogeenvs\Scripts\activate.bat                    (c3)

As a result, if you type the command ahogeenvs on cmd after that, you will have entered the same command as in (c2). Of course, ahogeenvs is an arbitrary command, and you can set your own favorite command. However, if you give it a name that exactly matches the folder (in this case, `` `hogeenvs```), Since there was a concern that a problem would occur when operating this folder itself, I set it as (c3).

4.2 Output the registered macro as a macro file

The macro set in 4.1 becomes invalid when cmd is closed. Therefore, output this as a macro file and use the methods of 4.3 and 4.4. It is necessary to make it available continuously in the future.

With the following command, the list of registered command macros is output to "c: (arbitrary path) \ cmd_macros.txt".

doskey /macros > c:(Arbitrary path)\cmd_macros.txt                    (c4)

4.3 Load macro file at startup

The file created in 4.2 is collectively registered as a command macro when the following command is entered when cmd is started.

doskey /macrofile=c:(3.Path set in 2)\cmd_macros.txt                    (c5)

Use the following command to check whether the settings are reflected.

doskey /macros                    (c6)

4.4 Macro file automatic reading setting when cmd is started

In the method of 4.3, it is necessary to input (c5) each time when cmd is started. This is very complicated, so make sure that the command file is automatically read when cmd is started. First, enter "cmd" from the search file and select "Open file location" from there. 無題.png

Then, the cmd shortcut is displayed as shown above, so right-click it to open the properties. Put a half-width space after cmd.exe of "link destination (T)" (red circle in the lower left figure),

(Path information)\cmd_macros.Enter txt and click Apply.




 ![無題2.png](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/632866/87e9a685-c3d7-ec1e-9b91-db55b6f3f9b3.png)

 Now, the next time you start cmd, the macro file will be loaded automatically.
 Note that <b> cmd is always started from this shortcut </ b>.
 If you want to use different shortcuts, you need to set the same as 3.4 for each shortcut.


## Reference URL
 Details about operations from 4.1 to 4.4.
<https://www.adminweb.jp/command/command/index2.html>

 On the command prompt using command macros
 When you want to operate commands like a Linux terminal.
<https://qiita.com/asmin/items/d53e71ed98a377ca7823>
<https://www.ilovex.co.jp/blog/system/windows/dos-ailias.html>

  




Recommended Posts

Simplified Path input when enabling virtual environment in venv
Use jupyter-lab installed in python virtual environment (venv)
virtual environment in python
Building and enabling a python virtual environment, etc. (venv)
venv: Python virtual environment management
python standard virtual environment venv
After enabling the python virtual environment in the batch file, run the python file
Debug settings in virtual environment when using Pipenv with VS Code
Error "Entry point not found" when starting Jupyter Notebook in virtual environment
Install Django in a pipenv virtual environment
Using venv in Windows + Docker environment [Python]
Effortlessly vscode + venv virtual environment (Windows) memo
Creating a virtual environment in an Anaconda environment
I started Node.js in a virtual environment
Python virtual environment in 2021 ~ There is no reason not to use venv now ~
How to create a Python virtual environment (venv)
Ubuntu18.04.05 Creating a python virtual environment in LTS
Start Django in a virtual environment with Pipenv
Create a virtual environment with conda in Python
Precautions when installing packages in the conda environment
Error when entering virtual environment with workon command
Build a virtual environment with pyenv and venv
[Venv] Create a python virtual environment on Ubuntu
Work in a virtual environment with Python virtualenv.
Error running Jupyter Notebook in Anaconda virtual environment
Use pydantic when reading environment variables in Python