Python’s Tilde ~n operator is the bitwise negation operator: it takes the number n as binary number and “flips” all bits 0 to 1 and 1 to 0 to obtain the complement binary number. For example, the tilde operation ~1 becomes 0 and ~0 becomes 1 and ~101 becomes 010.

Read all about the Tilde operator in my detailed tutorial on this blog.

Sometimes, you’ll see the tilde operator in a Pandas DataFrame for indexing. Here’s an example:

import pandas as pd # Create a DataFrame

df = pd.DataFrame([{'User': 'Alice', 'Age': 22}, {'User': 'Bob', 'Age': 24}])

print(df) ''' User Age

0 Alice 22

1 Bob 24 ''' # Use Tilde to access all lines where user doesn't contain 'A'

df = df[~df['User'].str.contains('A')]

print(df) ''' User Age

1 Bob 24 '''

To improve your practical understanding, feel free to run this code in your browser in our interactive Python shell:

The tilde operator negates the Boolean values in the DataFrame: True becomes False and False becomes True.

You can see this in action when printing the result of different operations:

This is the original DataFrame in the code:

print(df) ''' User Age

0 Alice 22

1 Bob 24 '''

Now apply the contains operation to find all user names that contain the character 'A'.

print(df['User'].str.contains('A')) '''

0 True

1 False

Name: User, dtype: bool '''

The result is a DataFrame with Boolean values that indicate whether a user contains the character 'A' or not.

Let’s apply the Tilde operator on the result:

print(~df['User'].str.contains('A')) '''

0 False

1 True

Name: User, dtype: bool '''

Now, we use this DataFrame to access only those rows with users that don’t contain the character 'A'.

df = df[~df['User'].str.contains('A')]

print(df) ''' User Age

1 Bob 24 '''

Where to Go From Here?

Enough theory, let’s get some practice!

To become successful in coding, you need to get out there and solve real problems for real people. That’s how you can become a six-figure earner easily. And that’s how you polish the skills you really need in practice. After all, what’s the use of learning theory that nobody ever needs?

Practice projects is how you sharpen your saw in coding!

Do you want to become a code master by focusing on practical code projects that actually earn you money and solve problems for people?

Then become a Python freelance developer! It’s the best way of approaching the task of improving your Python skills—even if you are a complete beginner.

Join my free webinar “How to Build Your High-Income Skill Python” and watch how I grew my coding business online and how you can, too—from the comfort of your own home.

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ENVE, or Enve is Not a Video Editor, is a new in development 2D animation software, completely free and open source.  Even in this early state, Enve is remarkably capable animation tool, with a full suite of drawing tools for both vector and result art, including MyPaint brush integration.

ENVE is described as:

Enve is a new open-source 2D animation software for Linux and Windows. You can use enve to create vector animations, raster animations, and even use sound and video files. Enve was created with flexibility and expandability in mind.

The source code is available on GitHub under the GPLv3 license with binaries available for Windows and Linux.  You can check out a complete review of ENVE in action in the video below.

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GameDev News Art Applications 2D Review

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Another busy week has been and gone, this time bringing a cheeky asset flip game on Switch, more Animal Crossing item duplication glitches, and the big Paper Mario Switch reveal, but now it’s time to wind down with some weekend gaming.

Members of Team Nintendo Life have gathered together to discuss our weekend plans, and we’d love for you to join in via our poll and comment sections below. Enjoy!

Liam Doolan, news reporter

For the past few months, the only game I’ve really been playing on my Nintendo Switch is Animal Crossing: New Horizons. Nothing has really changed in that time – I’m still in debt, and I’m still in need of more Bells. As a result, I’ll be spending most of my weekend picking and selling fruit to pay off at least something, so I can then take out another loan from the bank of Nook and do it all again next week.

When I’m not busy paying off loans, I might finally test out the last major update for Super Mario Maker 2. There’s also a limited-time Animal Crossing event taking place in Tetris 99 this weekend, so I need to unlock that theme. That’s all for me!

Ryan Craddock, news editor

My time with Animal Crossing: New Horizons is still winding down more and more, but I’ll no doubt pop in each day for half an hour or so just to keep on top of the daily activities and check Nook’s Cranny for any particular juicy goods.

The majority of my free time this week, however, has been spent playing Mario & Luigi: Superstar Saga on the good old Game Boy Advance. It’s been sitting on my shelf since childhood, and booting it up revealed that ten-year-old me only managed to put about an hour in before moving on to something else. I’ve been enjoying my time with it – especially the humour – and will keep going over the weekend. Between this and the Paper Mario reveal this week, I’m in a very Mario mood.

PJ O’Reilly, reviewer

This weekend it’s back to the Elder Scrolls for me for some Elder Scrolls: Blades review action. I’ll be interested to see how far the game’s come since I first dipped into it when it initially released back on mobile devices, here’s hoping they’ve done away with at least some of the constant timers and adverts and other pay to play elements that put me right off it back then.

Elsewhere, I’m still thoroughly enjoying blasting lumps out of thugs in Huntdown, it really is the best old-school run n’ gun effort I’ve played in a long time, and I’ll also be pulling out the old 3DS and introducing my kids to Paper Mario to let them get a taste of why I’ve been so excited about the announcement of The Origami King this week. Hope you’re all staying safe and have a good weekend.

Zion Grassl, video producer

I’m going to do my absolute best to make sure the only game I play this weekend isn’t just Animal Crossing (but honestly, no guarantees.) I’m finally starting to get a bit more creative with my island and have some new areas I’m working to decorate and spruce up! I ended up making a trading post area that I like to call “The Stop and Swop” ala Banjo-Kazooie, except Isabelle said she’s not the biggest fan of it since it mostly consists of some unsavory items like my old Moldy Dress, Frugal Hat, etc.

I did start playing Final Fantasy VII on Switch a few weeks back for our video review and have been trying to pick it back up when I notice myself with a bit of free time. I played it way back in the day and made it to the very last “dungeon” but put it down for some reason and never picked it back up! I think some part of me didn’t want the game and its story to be over, so hopefully with this new playthrough I’ll see the journey out to the very end.

Austin Voigt, contributing writer

I’ve finally gotten into my groove in Animal Crossing, where I log in for about an hour each day and just complete general tasks. Of course, this has opened up room for me to begin playing other things again. I’ll probably dig back into some of the games I was in the middle of before Animal Crossing Mania hit, like Luigi’s Mansion 3.

I’ve also been playing a lot of Overcooked 2 with friends and family online during the quarantine. Some new games I’ve downloaded over the past few months and have yet to try out include Good Job!, Picross S4 and Little Town Hero, as well. However, there are some new events kicking off in Animal Crossing soon… so who knows if I’ll actually ever get around to playing anything else!

Gavin Lane, features editor

I’m in the mood for some breezy co-op gaming this weekend. In our household we’ve been suffering from an Overcooked 2 addiction which has started to strain relationships. It’s a fantastic game, but we’ve bled it dry and those 4-star challenges are just too stressful. We’re in need of a fresh co-op experience and I’ve had my eye on Moving Out since it was first announced. I interviewed Ashley Ringrose from developer SMG Studio a little while ago (look out for that interview going up soon), and I’m eager to find out if I’ve got the makings of a great F.A.R.T. or not. *keeps straight face…*

Have a good one, everyone!

Gonçalo Lopes, contributing writer

I’ve just discovered something new and unexpected in Ring Fit Adventure – no spoilers – and Animal Crossing: New Horizons keeps finding new ways to keep me going back to the island. The eShop also saw yet another ridiculous amount of quality stuff this past week: Gravity Rider Zero, Pong Quest, The Elder Scrolls: Blades, Ion Fury and the superb Jet Lancer will all find their way into this weekend’s rotation.

My game of the week is a masterpiece by the name of Huntdown. Amazing to have another GOTY candidate mere days after the Streets of Rage 4 release. Now if you will excuse me, John Sawyer’s trigger finger is itching again. Time to kill, kill and then kill some more pixelated street scum.

As always, thanks for reading! Make sure to leave a vote in the poll above and a comment below with your gaming choices over the next few days…