Python F-String Hacks: Debugging & Formatting Like a Pro 🐞🔧
.jpeg)
Stop the Print Madness
Okay, real talk. If you're still debugging by typing
print("variable:", variable)
on every other line... we need to have an intervention. 😩 You're working too hard! Python F-strings have a built-in debug mode that's about to blow your mind. It's the biggest flex since sliced bread. No cap.
The Ultimate Debugging Hack
Prepare to have your life changed. You know how you usually write:
print(f"user = {user}")
What if I told you you could just... not? The biggest power move is literally just adding an equals sign. For real.
print(f"{user=}")
That's it. That's the whole thing. It will output something like:
user='lisa'.
It prints the variable name and its value. You're welcome. This is the one hack you'll use every single day. Mind. Blown. 💥
Making Output Pretty: The Formatting Glow-Up
F-strings aren't just for variables, they're for making your output look absolutely chef's kiss. Let's get into the deets.
Got a float like price = 99.98765 and you want it to look like real money? Slap on :.2f and call it a day.
print(f"Price: ${price:.2f}")
Output:
Price: $99.99
Working with percentages? completion = 0.856 becomes a clean 85.6% with this simple magic:
print(f"Download: {completion:.1%}")
Output:
Download: 85.6%
Got a big number like population = 10_000_000? Make it readable for us mere mortals by throwing in a comma.
print(f"Population: {population:,}")
Output:
Population: 10,000,000
Alignment: Getting Things Lined Up
Want to make a little text-based table? F-strings have your back. Use >, <, and ^ to align your text like a boss. For a word like "Python":
print(f"|{word:>10}|")
Output:| Python| (Right-aligned in 10 spaces)
print(f"|{word:<10}|")
Output:|Python | (Left-aligned)
print(f"|{word:^10}|")
Output:| Python | (Centered. So fancy!)
Pro-Tip: Commas are Your Best Friend
Seriously, the :, formatting trick for big numbers is a total game-changer. Your data output will look so clean and professional. It's the easiest way to look like you've got your life together. 📊
The Bottom Line
Your debugging and output formatting game just leveled up to pro status. Stop the messy prints and start using these hacks. Your code will be cleaner, your debugging faster, and your life easier. You're winning. 🏆🐍
Aaron Rose is a software engineer and technology writer at tech-reader.blog and the author of Think Like a Genius.
Comments
Post a Comment