How to run python script with third party libraries on computer without python?-CodePudding

I am doing coursework and one of the important requirements is to create a .bat file for scripts. The bat file should run the script. I took this step until one thought struck me.

Code .bat file:

@echo off
py -u "Task_1.py"
echo %ERRORLEVEL%
pause

In my code, I use many third-party libraries, including for creating an interface. Let's assume that this script will run on a computer without python. Is it possible to somehow write a .bat file that would check for the presence of python and third-party libraries, and in their absence would download them? Has anyone done something similar, could you suggest how this can be implemented?

CodePudding user response：

You could have the .bat file run a python environment you make and pip install dependencies, would be worth looking into.

CodePudding user response：

This answer says that curl comes with Windows version 10 or newer. Therefore I would just curl the installer:

curl https://www.python.org/ftp/python/3.10.1/python-3.10.1-amd64.exe

now run it with /quit as by this answer:

.\python-3.10.1-amd64.exe /quiet

Then you can install pip as suggested as an alternative method from the official pip website:

py -m pip install --upgrade pip

Now you can use pip install to get whatever libraries you might need:

pip install numpy

Note: I have not been able to test this on my Windows so use with caution

CodePudding user response：

In your .bat script, you can first run py --version and check the return code of the command to see if Windows could find py.

If it couldn't:

Download a Python installer. I don't know which utility is supposed to do that on Windows, but it should look similar to this (wget on Linux, saves the installer as python-installer.exe):
```
wget -O python-installer.exe https://www.python.org/ftp/python/3.10.1/python-3.10.1-amd64.exe
```
Then launch it and let the user go through the installation:
```
./python-installer.exe
```

Then, execute pip install --user your libs to install the libaries if needed.

Then, run your Python script.

CodePudding user response：

I found a post to check if python is installed or not (How do I test if Python is installed on Windows (10), and run an exe to install it if its not installed?). It explains it quite well. For the modules I would suggest using pip and installing the required modules by a requirements file.