Python: Added Shebang Usage

wiki/linux/shell.md

@@ -35,6 +35,44 @@ There are similar repositories and resources for functions that are outside the
 shells.
 Because of that and their issue regarding compatibility they will not be mentioned here.
 
+### Shebangs
+
+A shebang specifies which interpreter should execute a script.
+It is written as the first line of the file and starts with `#!`.
+
+For example, a [POSIX shell](#unix-shells) script typically begins with the following.
+
+```sh
+#!/bin/sh
+```
+
+A [Bash](#unix-shells) script commonly uses the following line.
+
+```sh
+#!/usr/bin/env bash
+```
+
+Using `/usr/bin/env` causes the interpreter to be resolved through the current `PATH` instead of
+using a fixed path.
+This makes scripts more portable and allows them to use interpreters provided by virtual
+environments—for example
+[Pythons virtual environments](/wiki/programming_language/python.md#using-virtual-environments)—or
+other tools.
+
+To execute a script directly, it first has to be marked as executable.
+
+```sh
+chmod +x <script>
+```
+
+It can then be started directly.
+
+```sh
+./<script>
+```
+
+The operating system will automatically invoke the interpreter specified by the shebang.
+
 ### Symbolic Links using `ln`
 
 `ln` is a command to create links between files and folders.

wiki/programming_language/python.md

@@ -88,6 +88,23 @@ python3.9 --version
 
 This section addresses the usage of Python.
 
+### Executable Python Scripts
+
+Python scripts can be made directly executable without explicitly calling the Python executable
+itself every time.
+For general information about shebangs, executable scripts and the `chmod +x` command, refer to the
+corresponding section in the [Shell article](/wiki/linux/shell.md#shebangs).
+
+For Python it is recommended to use the following shebang.
+
+```py
+#!/usr/bin/env python
+```
+
+Using `/usr/bin/env python` makes the script compatible with
+[virtual environments](#using-virtual-environments), [uv](/wiki/programming_language/python/uv.md)
+projects and other Python environment managers.
+
 ### Convert `.ipynb` Files to `.py` Files and Back
 
 Jupyter notebooks in the `.ipynb` format can easily be converted to normal Python files using

wiki/programming_language/python/uv.md

@@ -8,12 +8,26 @@ dependencies.
 ## Setup
 
 Refer to the [official installation guide](https://docs.astral.sh/uv/getting-started/installation/)
-to install `uv` on your operating system.
+to install uv on your operating system.
 
 ## Usage
 
 This section addresses the usage of uv.
 
+### Executable Scripts
+
+uv fully supports Python scripts that use the standard Python shebang.
+
+```py
+#!/usr/bin/env python
+```
+
+This allows scripts to automatically use the Python interpreter provided by the current uv project
+or [virtual environment](/wiki/programming_language/python.md#using-virtual-environments).
+
+For a general explanation of shebangs and executable scripts, refer to the
+[Shell article](/wiki/linux/shell.md#shebangs).
+
 ### Managing Python Versions
 
 Python versions can be installed and pinned for the current project by replacing