Python | Beens' Blog

March 30, 2023March 30, 2023

Python f-strings: Use of “=” (very cool!)

In Python f-strings, the equal sign (=) is used to print both the variable name and its value in a string. It is used to facilitate print-debugging by expanding to the text of the expression, an equal sign, then the representation of the evaluated expression. For example, if you have a variable named x with a value of 5, you can use an f-string like this: f'{x=}' which will expand to 'x=5'⁷.

Try it out here!

Source: Conversation with Bing, 3/30/2023

(1) python – What does = (equal) do in f-strings inside the expression …. https://stackoverflow.com/questions/59661904/what-does-equal-do-in-f-strings-inside-the-expression-curly-brackets Accessed 3/30/2023.

(2) Python f-String Tutorial – String Formatting in Python Explained with …. https://www.freecodecamp.org/news/python-f-strings-tutorial-how-to-use-f-strings-for-string-formatting/ Accessed 3/30/2023.

(3) Python f-strings: Everything you need to know! • datagy. https://datagy.io/python-f-strings/ Accessed 3/30/2023.

(4) Python 3’s f-Strings: An Improved String Formatting Syntax (Guide). https://realpython.com/python-f-strings/ Accessed 3/30/2023.

(5) PEP 498 – Literal String Interpolation | peps.python.org. https://peps.python.org/pep-0498/ Accessed 3/30/2023.

(6) Modulo String Formatting in Python – Real Python. https://realpython.com/python-modulo-string-formatting/ Accessed 3/30/2023.

(7) f-strings in Python – GeeksforGeeks. https://www.geeksforgeeks.org/formatted-string-literals-f-strings-python/ Accessed 3/30/2023.

(8) What does ‘f’ mean before a string in Python? – Stack Overflow. https://stackoverflow.com/questions/58233423/what-does-f-mean-before-a-string-in-python Accessed 3/30/2023.

This post was inspired by this tweet:

Python 🐍 f-strings are the best. 🚀

Use an `=` inside your f-string to print the value AND the expression that produced the value! ✨ pic.twitter.com/SgXbEaNfxQ
— Rodrigo 🐍🚀 (@mathsppblog) March 30, 2023

March 30, 2023March 30, 2023

Hey Bing Chat: How can I compile a Python program into an executable file?

Bing Chat is an AI alternative to Chat-GPT. I’ve been testing it quite a bit since, at least for now, it is completely free and in most cases does an excellent job.

Here is a test case that worked perfectly for me…

Prompt: How can I compile a Python program into an executable file?

There are several ways to compile Python code into an executable file. One of the most popular ways is to use PyInstaller² which can be installed using pip package manager². Once installed, you can use it to create an executable file by running the following command in your terminal:

pyinstaller yourscript.py

This will create a folder named “dist” in your current working directory which will contain your executable file².

Another way to compile Python code into an executable file is to use auto-py-to-exe¹. You can install it using pip package manager and then launch it by entering “auto-py-to-exe” into cmd¹. Once launched, you can select the python script path into Script Location field and decide whether you need the exe file as One Directory or as one file¹.

Source: Conversation with Bing, 3/30/2023

(1) How to Turn Your Python Code into an Exe on Windows – Mouse Vs Python. https://www.blog.pythonlibrary.org/2021/05/27/pyinstaller-how-to-turn-your-python-code-into-an-exe-on-windows/ Accessed 3/30/2023.

(2) How to Compile Python to Exe ? 3 Methods – Data Science Learner. https://www.datasciencelearner.com/how-to-compile-python-to-exe/ Accessed 3/30/2023.

(3) How to compile Python to exe | Code Underscored. https://www.codeunderscored.com/compile-python-exe/ Accessed 3/30/2023.

(4) How to Compile Python Script (with Pictures) – wikiHow. https://www.wikihow.com/Compile-Python-Script Accessed 3/30/2023.

(5) How can I convert a .py to .exe for Python? – Stack Overflow. https://stackoverflow.com/questions/41570359/how-can-i-convert-a-py-to-exe-for-python Accessed 3/30/2023.

(6) Create Executable of Python Script using PyInstaller. https://bing.com/search?q=how+to+create+an+executable+file+from+python+code Accessed 3/30/2023.

(7) Two Simple Methods To Convert A Python File To An Exe File. https://www.datacamp.com/tutorial/two-simple-methods-to-convert-a-python-file-to-an-exe-file Accessed 3/30/2023.

(8) How do I make an executable from a Python script?. https://www.tutorialspoint.com/how-do-i-make-an-executable-from-a-python-script Accessed 3/30/2023.

(9) How to Easily Convert a Python Script to an Executable File (.exe). https://towardsdatascience.com/how-to-easily-convert-a-python-script-to-an-executable-file-exe-4966e253c7e9 Accessed 3/30/2023.

Prompt: Using pyinstaller, can my Python program be compiled into a single file?

Yes, it can be compiled into a single file. You can use PyInstaller to create a single executable file by using the “–onefile” option. Here’s an example command:

pyinstaller --onefile yourscript.py

This will create a single executable file in the “dist” folder of your current working directory.

Success?

Absolutely! It worked perfectly with a simple file management program I wrote. Just like the tip above mentioned it would do, it created an exe file in a dist folder that it created that I was able to copy to my Desktop to make it more convenient to run.