Update installation instructions (#19)

* Update installation instructions

* Update linux.md

* Update mac.md

* Update windows.md

Author: Saransh-cpp

session99/index.md

@@ -16,11 +16,10 @@ What we're installing
 ---------------------
 
 For the software engineering session on programming, we'll be using the language *Python* and in
-particular versions >= 3.7. We will use the *Anaconda* python distribution which contains a good
-collection of the most common *Python* modules as well as *IPython* (an improved *Python*
-interpreter) and the Jupyter notebook (a useful web-based user interface that allows you to create
-documents that combine text and *Python* code, executable with the same browser window).  We'll need
-*pip*, the package installer for *Python*, as well.
+particular versions >= 3.9. We will primarily use *uv* and *venv* to manage virtual environments
+as well as *IPython* (an improved *Python* interpreter) and the Jupyter notebook (a useful web-based
+user interface that allows you to create documents that combine text and *Python* code, executable
+with the same browser window).  We'll need *pip*, the package installer for *Python*, as well.
 
 For the session on version control, we'll be using *Git* and the *Github* website.
 

session99/linux.md

@@ -35,34 +35,6 @@ Older distributions may have outdated versions of specific packages.
 Other linux distributions most likely also contain the needed python packages but again
 they may also be outdated.
 
-Python via Anaconda
------------------------
-
-We recommend you use [Anaconda](https://anaconda.org/), a complete independent scientific python distribution.
-
-Download [Anaconda for linux](https://www.anaconda.com/download/#linux) with your web browser, choose
-the python 3.7 version.  Open a terminal window, go to the place where the file was downloaded  and type:
-
-```bash
-bash Anaconda3-
-```
-
-and then press tab. The name of the file you just downloaded should appear.
-
-Press enter. You will follow the text-only prompts. To move through the text,
-press the space key. Type `yes` and press enter to approve the license. Press
-enter to approve the default location for the files. Type yes and press
-enter to prepend Anaconda to your PATH (this makes the Anaconda distribution
-the default Python).
-
-You can test the installation by opening a new terminal and checking that:
-
-```bash
-which python
-```
-
-shows a path where you installed anaconda.
-
 Git
 ---
 

session99/mac.md

@@ -67,14 +67,6 @@ installing homebrew.
 
 ## Python
 
-
-We recommend installing a complete scientific python distribution. One of these is
-[Anaconda](https://anaconda.org/).
-
-Please download and install [Anaconda](https://www.anaconda.com/download/)
-(Python 3.7 version).
-
-
 ### Python from Homebrew
 
 Alternatively if you wish to install python manually you can use Homebrew.

session99/windows.md

@@ -8,11 +8,7 @@ Windows
 Python
 ------
 
-We recommend installing a complete scientific python distribution. One of these is
-[Anaconda](https://www.anaconda.com/distribution/).
-
-Please download and install [Anaconda](https://www.anaconda.com/download/)
-(Python 3.7 version).
+We recommend installing a Python from the [official website](https://www.python.org/downloads/).
 
 Sophos
 ------